Home / 20,436.39-30,655.17-5,645.31

Finding the Fourth Proportional to 20,436.39, 30,655.17 and 5,645.31

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Solution

The fourth proportional to 20,436.39, 30,655.17 and 5,645.31 is: 8,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.39 : 30,655.17 = 5,645.31 : x
  2. Step 2: Convert to fraction form
    20,436.39/30,655.17 = 5,645.31/x
  3. Step 3: Cross multiply
    20,436.39x = 30,655.17 × 5,645.31
  4. Step 4: Simplify right side
    20,436.39x = 173,058,000.28
  5. Step 5: Solve for x
    x = 173,058,000.28/20,436.39
  6. Step 6: Final answer
    x = 8,468.13

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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.