Home / 38,316.66-57,356.19-20,742.90

Finding the Fourth Proportional to 38,316.66, 57,356.19 and 20,742.90

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Solution

The fourth proportional to 38,316.66, 57,356.19 and 20,742.90 is: 31,050.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,316.66 : 57,356.19 = 20,742.90 : x
  2. Step 2: Convert to fraction form
    38,316.66/57,356.19 = 20,742.90/x
  3. Step 3: Cross multiply
    38,316.66x = 57,356.19 × 20,742.90
  4. Step 4: Simplify right side
    38,316.66x = 1,189,733,713.55
  5. Step 5: Solve for x
    x = 1,189,733,713.55/38,316.66
  6. Step 6: Final answer
    x = 31,050.04

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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.