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Finding the Fourth Proportional to 18,673.32, 25,759.17 and 11,951.72

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Solution

The fourth proportional to 18,673.32, 25,759.17 and 11,951.72 is: 16,486.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.32 : 25,759.17 = 11,951.72 : x
  2. Step 2: Convert to fraction form
    18,673.32/25,759.17 = 11,951.72/x
  3. Step 3: Cross multiply
    18,673.32x = 25,759.17 × 11,951.72
  4. Step 4: Simplify right side
    18,673.32x = 307,866,355.07
  5. Step 5: Solve for x
    x = 307,866,355.07/18,673.32
  6. Step 6: Final answer
    x = 16,486.96

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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.