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Finding the Fourth Proportional to 16,761.90, 25,159.05 and 10,200.90

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Solution

The fourth proportional to 16,761.90, 25,159.05 and 10,200.90 is: 15,311.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,761.90 : 25,159.05 = 10,200.90 : x
  2. Step 2: Convert to fraction form
    16,761.90/25,159.05 = 10,200.90/x
  3. Step 3: Cross multiply
    16,761.90x = 25,159.05 × 10,200.90
  4. Step 4: Simplify right side
    16,761.90x = 256,644,953.15
  5. Step 5: Solve for x
    x = 256,644,953.15/16,761.90
  6. Step 6: Final answer
    x = 15,311.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.