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Finding the Fourth Proportional to 17,686.80, 24,407.28 and 9,620.20

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Solution

The fourth proportional to 17,686.80, 24,407.28 and 9,620.20 is: 13,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,686.80 : 24,407.28 = 9,620.20 : x
  2. Step 2: Convert to fraction form
    17,686.80/24,407.28 = 9,620.20/x
  3. Step 3: Cross multiply
    17,686.80x = 24,407.28 × 9,620.20
  4. Step 4: Simplify right side
    17,686.80x = 234,802,915.06
  5. Step 5: Solve for x
    x = 234,802,915.06/17,686.80
  6. Step 6: Final answer
    x = 13,275.60

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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.