Home / 15,287.29-21,087.51-9,613.05

Finding the Fourth Proportional to 15,287.29, 21,087.51 and 9,613.05

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Solution

The fourth proportional to 15,287.29, 21,087.51 and 9,613.05 is: 13,260.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.29 : 21,087.51 = 9,613.05 : x
  2. Step 2: Convert to fraction form
    15,287.29/21,087.51 = 9,613.05/x
  3. Step 3: Cross multiply
    15,287.29x = 21,087.51 × 9,613.05
  4. Step 4: Simplify right side
    15,287.29x = 202,715,288.01
  5. Step 5: Solve for x
    x = 202,715,288.01/15,287.29
  6. Step 6: Final answer
    x = 13,260.38

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Half scale
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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.