Home / 42,759.20-64,145.82-13,177.04

Finding the Fourth Proportional to 42,759.20, 64,145.82 and 13,177.04

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Solution

The fourth proportional to 42,759.20, 64,145.82 and 13,177.04 is: 19,767.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,759.20 : 64,145.82 = 13,177.04 : x
  2. Step 2: Convert to fraction form
    42,759.20/64,145.82 = 13,177.04/x
  3. Step 3: Cross multiply
    42,759.20x = 64,145.82 × 13,177.04
  4. Step 4: Simplify right side
    42,759.20x = 845,252,035.97
  5. Step 5: Solve for x
    x = 845,252,035.97/42,759.20
  6. Step 6: Final answer
    x = 19,767.72

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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.