Home / 42,747.40-64,121.10-13,174.30

Finding the Fourth Proportional to 42,747.40, 64,121.10 and 13,174.30

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Solution

The fourth proportional to 42,747.40, 64,121.10 and 13,174.30 is: 19,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,747.40 : 64,121.10 = 13,174.30 : x
  2. Step 2: Convert to fraction form
    42,747.40/64,121.10 = 13,174.30/x
  3. Step 3: Cross multiply
    42,747.40x = 64,121.10 × 13,174.30
  4. Step 4: Simplify right side
    42,747.40x = 844,750,607.73
  5. Step 5: Solve for x
    x = 844,750,607.73/42,747.40
  6. Step 6: Final answer
    x = 19,761.45

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1.5x scale

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.