Home / 42,865.20-64,294.16-13,282.38

Finding the Fourth Proportional to 42,865.20, 64,294.16 and 13,282.38

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Solution

The fourth proportional to 42,865.20, 64,294.16 and 13,282.38 is: 19,922.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,865.20 : 64,294.16 = 13,282.38 : x
  2. Step 2: Convert to fraction form
    42,865.20/64,294.16 = 13,282.38/x
  3. Step 3: Cross multiply
    42,865.20x = 64,294.16 × 13,282.38
  4. Step 4: Simplify right side
    42,865.20x = 853,979,398.49
  5. Step 5: Solve for x
    x = 853,979,398.49/42,865.20
  6. Step 6: Final answer
    x = 19,922.44

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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.