Home / 42,685.67-64,028.52-11,520.92

Finding the Fourth Proportional to 42,685.67, 64,028.52 and 11,520.92

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Solution

The fourth proportional to 42,685.67, 64,028.52 and 11,520.92 is: 17,281.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,685.67 : 64,028.52 = 11,520.92 : x
  2. Step 2: Convert to fraction form
    42,685.67/64,028.52 = 11,520.92/x
  3. Step 3: Cross multiply
    42,685.67x = 64,028.52 × 11,520.92
  4. Step 4: Simplify right side
    42,685.67x = 737,667,456.64
  5. Step 5: Solve for x
    x = 737,667,456.64/42,685.67
  6. Step 6: Final answer
    x = 17,281.38

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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.