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Finding the Fourth Proportional to 17,888.80, 24,687.18 and 9,931.15

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Solution

The fourth proportional to 17,888.80, 24,687.18 and 9,931.15 is: 13,705.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,888.80 : 24,687.18 = 9,931.15 : x
  2. Step 2: Convert to fraction form
    17,888.80/24,687.18 = 9,931.15/x
  3. Step 3: Cross multiply
    17,888.80x = 24,687.18 × 9,931.15
  4. Step 4: Simplify right side
    17,888.80x = 245,172,087.66
  5. Step 5: Solve for x
    x = 245,172,087.66/17,888.80
  6. Step 6: Final answer
    x = 13,705.34

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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.