Home / 31,635.80-43,656.24-18,209.12

Finding the Fourth Proportional to 31,635.80, 43,656.24 and 18,209.12

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Solution

The fourth proportional to 31,635.80, 43,656.24 and 18,209.12 is: 25,127.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,635.80 : 43,656.24 = 18,209.12 : x
  2. Step 2: Convert to fraction form
    31,635.80/43,656.24 = 18,209.12/x
  3. Step 3: Cross multiply
    31,635.80x = 43,656.24 × 18,209.12
  4. Step 4: Simplify right side
    31,635.80x = 794,941,712.91
  5. Step 5: Solve for x
    x = 794,941,712.91/31,635.80
  6. Step 6: Final answer
    x = 25,127.92

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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.