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Finding the Fourth Proportional to 15,020.94, 20,706.90 and 10,531.14

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Solution

The fourth proportional to 15,020.94, 20,706.90 and 10,531.14 is: 14,517.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.94 : 20,706.90 = 10,531.14 : x
  2. Step 2: Convert to fraction form
    15,020.94/20,706.90 = 10,531.14/x
  3. Step 3: Cross multiply
    15,020.94x = 20,706.90 × 10,531.14
  4. Step 4: Simplify right side
    15,020.94x = 218,067,262.87
  5. Step 5: Solve for x
    x = 218,067,262.87/15,020.94
  6. Step 6: Final answer
    x = 14,517.55

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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.