Home / 31,681.12-43,723.20-18,252.88

Finding the Fourth Proportional to 31,681.12, 43,723.20 and 18,252.88

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Solution

The fourth proportional to 31,681.12, 43,723.20 and 18,252.88 is: 25,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,681.12 : 43,723.20 = 18,252.88 : x
  2. Step 2: Convert to fraction form
    31,681.12/43,723.20 = 18,252.88/x
  3. Step 3: Cross multiply
    31,681.12x = 43,723.20 × 18,252.88
  4. Step 4: Simplify right side
    31,681.12x = 798,074,322.82
  5. Step 5: Solve for x
    x = 798,074,322.82/31,681.12
  6. Step 6: Final answer
    x = 25,190.85

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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.