Home / 15,432.16-21,301.82-9,382.48

Finding the Fourth Proportional to 15,432.16, 21,301.82 and 9,382.48

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Solution

The fourth proportional to 15,432.16, 21,301.82 and 9,382.48 is: 12,951.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.16 : 21,301.82 = 9,382.48 : x
  2. Step 2: Convert to fraction form
    15,432.16/21,301.82 = 9,382.48/x
  3. Step 3: Cross multiply
    15,432.16x = 21,301.82 × 9,382.48
  4. Step 4: Simplify right side
    15,432.16x = 199,863,900.11
  5. Step 5: Solve for x
    x = 199,863,900.11/15,432.16
  6. Step 6: Final answer
    x = 12,951.13

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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.