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Finding the Fourth Proportional to 22,291.91, 30,754.96 and 12,724.90

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Solution

The fourth proportional to 22,291.91, 30,754.96 and 12,724.90 is: 17,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,291.91 : 30,754.96 = 12,724.90 : x
  2. Step 2: Convert to fraction form
    22,291.91/30,754.96 = 12,724.90/x
  3. Step 3: Cross multiply
    22,291.91x = 30,754.96 × 12,724.90
  4. Step 4: Simplify right side
    22,291.91x = 391,353,790.50
  5. Step 5: Solve for x
    x = 391,353,790.50/22,291.91
  6. Step 6: Final answer
    x = 17,555.87

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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.