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Finding the Fourth Proportional to 12,592.11, 18,879.65 and 7,049.28

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Solution

The fourth proportional to 12,592.11, 18,879.65 and 7,049.28 is: 10,569.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,592.11 : 18,879.65 = 7,049.28 : x
  2. Step 2: Convert to fraction form
    12,592.11/18,879.65 = 7,049.28/x
  3. Step 3: Cross multiply
    12,592.11x = 18,879.65 × 7,049.28
  4. Step 4: Simplify right side
    12,592.11x = 133,087,903.91
  5. Step 5: Solve for x
    x = 133,087,903.91/12,592.11
  6. Step 6: Final answer
    x = 10,569.15

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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.