Home / 26,439.38-39,631.04-12,387.56

Finding the Fourth Proportional to 26,439.38, 39,631.04 and 12,387.56

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Solution

The fourth proportional to 26,439.38, 39,631.04 and 12,387.56 is: 18,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,439.38 : 39,631.04 = 12,387.56 : x
  2. Step 2: Convert to fraction form
    26,439.38/39,631.04 = 12,387.56/x
  3. Step 3: Cross multiply
    26,439.38x = 39,631.04 × 12,387.56
  4. Step 4: Simplify right side
    26,439.38x = 490,931,625.77
  5. Step 5: Solve for x
    x = 490,931,625.77/26,439.38
  6. Step 6: Final answer
    x = 18,568.20

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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.