Home / 15,321,522,638.57-21,143,691,691.04-8,280,992,270.57

Finding the Fourth Proportional to 15,321,522,638.57, 21,143,691,691.04 and 8,280,992,270.57

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Solution

The fourth proportional to 15,321,522,638.57, 21,143,691,691.04 and 8,280,992,270.57 is: 11,427,764,171.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321,522,638.57 : 21,143,691,691.04 = 8,280,992,270.57 : x
  2. Step 2: Convert to fraction form
    15,321,522,638.57/21,143,691,691.04 = 8,280,992,270.57/x
  3. Step 3: Cross multiply
    15,321,522,638.57x = 21,143,691,691.04 × 8,280,992,270.57
  4. Step 4: Simplify right side
    15,321,522,638.57x = 175,090,747,464,775,958,528
  5. Step 5: Solve for x
    x = 175,090,747,464,775,958,528/15,321,522,638.57
  6. Step 6: Final answer
    x = 11,427,764,171.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.