Home / 42,781.77-64,175.90-11,616.57

Finding the Fourth Proportional to 42,781.77, 64,175.90 and 11,616.57

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Solution

The fourth proportional to 42,781.77, 64,175.90 and 11,616.57 is: 17,425.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,781.77 : 64,175.90 = 11,616.57 : x
  2. Step 2: Convert to fraction form
    42,781.77/64,175.90 = 11,616.57/x
  3. Step 3: Cross multiply
    42,781.77x = 64,175.90 × 11,616.57
  4. Step 4: Simplify right side
    42,781.77x = 745,503,776.58
  5. Step 5: Solve for x
    x = 745,503,776.58/42,781.77
  6. Step 6: Final answer
    x = 17,425.73

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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.