Home / 20,438.12-30,652.32-5,646.71

Finding the Fourth Proportional to 20,438.12, 30,652.32 and 5,646.71

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Solution

The fourth proportional to 20,438.12, 30,652.32 and 5,646.71 is: 8,468.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438.12 : 30,652.32 = 5,646.71 : x
  2. Step 2: Convert to fraction form
    20,438.12/30,652.32 = 5,646.71/x
  3. Step 3: Cross multiply
    20,438.12x = 30,652.32 × 5,646.71
  4. Step 4: Simplify right side
    20,438.12x = 173,084,761.87
  5. Step 5: Solve for x
    x = 173,084,761.87/20,438.12
  6. Step 6: Final answer
    x = 8,468.72

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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.