Home / 15,324.38-21,147.44-8,518.15

Finding the Fourth Proportional to 15,324.38, 21,147.44 and 8,518.15

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Solution

The fourth proportional to 15,324.38, 21,147.44 and 8,518.15 is: 11,754.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,324.38 : 21,147.44 = 8,518.15 : x
  2. Step 2: Convert to fraction form
    15,324.38/21,147.44 = 8,518.15/x
  3. Step 3: Cross multiply
    15,324.38x = 21,147.44 × 8,518.15
  4. Step 4: Simplify right side
    15,324.38x = 180,137,066.04
  5. Step 5: Solve for x
    x = 180,137,066.04/15,324.38
  6. Step 6: Final answer
    x = 11,754.93

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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.