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Finding the Fourth Proportional to 18,775.46, 25,909.02 and 10,275.90

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Solution

The fourth proportional to 18,775.46, 25,909.02 and 10,275.90 is: 14,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.46 : 25,909.02 = 10,275.90 : x
  2. Step 2: Convert to fraction form
    18,775.46/25,909.02 = 10,275.90/x
  3. Step 3: Cross multiply
    18,775.46x = 25,909.02 × 10,275.90
  4. Step 4: Simplify right side
    18,775.46x = 266,238,498.62
  5. Step 5: Solve for x
    x = 266,238,498.62/18,775.46
  6. Step 6: Final answer
    x = 14,180.13

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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.