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Finding the Fourth Proportional to 27,298.20, 40,947.30 and 20,737.20

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Solution

The fourth proportional to 27,298.20, 40,947.30 and 20,737.20 is: 31,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,298.20 : 40,947.30 = 20,737.20 : x
  2. Step 2: Convert to fraction form
    27,298.20/40,947.30 = 20,737.20/x
  3. Step 3: Cross multiply
    27,298.20x = 40,947.30 × 20,737.20
  4. Step 4: Simplify right side
    27,298.20x = 849,132,349.56
  5. Step 5: Solve for x
    x = 849,132,349.56/27,298.20
  6. Step 6: Final answer
    x = 31,105.80

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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.