Home / 15,285.97-21,094.39-8,571.59

Finding the Fourth Proportional to 15,285.97, 21,094.39 and 8,571.59

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Solution

The fourth proportional to 15,285.97, 21,094.39 and 8,571.59 is: 11,828.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.97 : 21,094.39 = 8,571.59 : x
  2. Step 2: Convert to fraction form
    15,285.97/21,094.39 = 8,571.59/x
  3. Step 3: Cross multiply
    15,285.97x = 21,094.39 × 8,571.59
  4. Step 4: Simplify right side
    15,285.97x = 180,812,462.38
  5. Step 5: Solve for x
    x = 180,812,462.38/15,285.97
  6. Step 6: Final answer
    x = 11,828.65

Related Problems

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Half scale
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Double scale
Find fourth proportional to 15,286.97, 21,095.77 and 8,572.59
Similar ratio
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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.