Home / 38,479.74-57,719.24-20,718.70

Finding the Fourth Proportional to 38,479.74, 57,719.24 and 20,718.70

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Solution

The fourth proportional to 38,479.74, 57,719.24 and 20,718.70 is: 31,077.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,479.74 : 57,719.24 = 20,718.70 : x
  2. Step 2: Convert to fraction form
    38,479.74/57,719.24 = 20,718.70/x
  3. Step 3: Cross multiply
    38,479.74x = 57,719.24 × 20,718.70
  4. Step 4: Simplify right side
    38,479.74x = 1,195,867,617.79
  5. Step 5: Solve for x
    x = 1,195,867,617.79/38,479.74
  6. Step 6: Final answer
    x = 31,077.85

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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.