Home / 38,631.40-57,947.10-12,338.80

Finding the Fourth Proportional to 38,631.40, 57,947.10 and 12,338.80

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Solution

The fourth proportional to 38,631.40, 57,947.10 and 12,338.80 is: 18,508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,631.40 : 57,947.10 = 12,338.80 : x
  2. Step 2: Convert to fraction form
    38,631.40/57,947.10 = 12,338.80/x
  3. Step 3: Cross multiply
    38,631.40x = 57,947.10 × 12,338.80
  4. Step 4: Simplify right side
    38,631.40x = 714,997,677.48
  5. Step 5: Solve for x
    x = 714,997,677.48/38,631.40
  6. Step 6: Final answer
    x = 18,508.20

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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.