Home / 31,185.20-43,041.48-18,616.88

Finding the Fourth Proportional to 31,185.20, 43,041.48 and 18,616.88

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Solution

The fourth proportional to 31,185.20, 43,041.48 and 18,616.88 is: 25,694.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,185.20 : 43,041.48 = 18,616.88 : x
  2. Step 2: Convert to fraction form
    31,185.20/43,041.48 = 18,616.88/x
  3. Step 3: Cross multiply
    31,185.20x = 43,041.48 × 18,616.88
  4. Step 4: Simplify right side
    31,185.20x = 801,298,068.18
  5. Step 5: Solve for x
    x = 801,298,068.18/31,185.20
  6. Step 6: Final answer
    x = 25,694.82

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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.