Home / 38,742.54-58,117.05-12,447.78

Finding the Fourth Proportional to 38,742.54, 58,117.05 and 12,447.78

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Solution

The fourth proportional to 38,742.54, 58,117.05 and 12,447.78 is: 18,672.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,742.54 : 58,117.05 = 12,447.78 : x
  2. Step 2: Convert to fraction form
    38,742.54/58,117.05 = 12,447.78/x
  3. Step 3: Cross multiply
    38,742.54x = 58,117.05 × 12,447.78
  4. Step 4: Simplify right side
    38,742.54x = 723,428,252.65
  5. Step 5: Solve for x
    x = 723,428,252.65/38,742.54
  6. Step 6: Final answer
    x = 18,672.71

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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.