Home / 15,615.68-21,549.12-9,324.32

Finding the Fourth Proportional to 15,615.68, 21,549.12 and 9,324.32

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Solution

The fourth proportional to 15,615.68, 21,549.12 and 9,324.32 is: 12,867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.68 : 21,549.12 = 9,324.32 : x
  2. Step 2: Convert to fraction form
    15,615.68/21,549.12 = 9,324.32/x
  3. Step 3: Cross multiply
    15,615.68x = 21,549.12 × 9,324.32
  4. Step 4: Simplify right side
    15,615.68x = 200,930,890.60
  5. Step 5: Solve for x
    x = 200,930,890.60/15,615.68
  6. Step 6: Final answer
    x = 12,867.25

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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.