Home / 31,186.52-43,038.24-18,618.56

Finding the Fourth Proportional to 31,186.52, 43,038.24 and 18,618.56

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Solution

The fourth proportional to 31,186.52, 43,038.24 and 18,618.56 is: 25,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,186.52 : 43,038.24 = 18,618.56 : x
  2. Step 2: Convert to fraction form
    31,186.52/43,038.24 = 18,618.56/x
  3. Step 3: Cross multiply
    31,186.52x = 43,038.24 × 18,618.56
  4. Step 4: Simplify right side
    31,186.52x = 801,310,053.73
  5. Step 5: Solve for x
    x = 801,310,053.73/31,186.52
  6. Step 6: Final answer
    x = 25,694.12

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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.