Home / 31,616.89-43,635.68-18,187.90

Finding the Fourth Proportional to 31,616.89, 43,635.68 and 18,187.90

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Solution

The fourth proportional to 31,616.89, 43,635.68 and 18,187.90 is: 25,101.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,616.89 : 43,635.68 = 18,187.90 : x
  2. Step 2: Convert to fraction form
    31,616.89/43,635.68 = 18,187.90/x
  3. Step 3: Cross multiply
    31,616.89x = 43,635.68 × 18,187.90
  4. Step 4: Simplify right side
    31,616.89x = 793,641,384.27
  5. Step 5: Solve for x
    x = 793,641,384.27/31,616.89
  6. Step 6: Final answer
    x = 25,101.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.