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Finding the Fourth Proportional to 18,315.92, 25,275.98 and 9,932.42

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Solution

The fourth proportional to 18,315.92, 25,275.98 and 9,932.42 is: 13,706.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.92 : 25,275.98 = 9,932.42 : x
  2. Step 2: Convert to fraction form
    18,315.92/25,275.98 = 9,932.42/x
  3. Step 3: Cross multiply
    18,315.92x = 25,275.98 × 9,932.42
  4. Step 4: Simplify right side
    18,315.92x = 251,051,649.27
  5. Step 5: Solve for x
    x = 251,051,649.27/18,315.92
  6. Step 6: Final answer
    x = 13,706.75

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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.