Home / 31,410.24-43,326.90-18,654.78

Finding the Fourth Proportional to 31,410.24, 43,326.90 and 18,654.78

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Solution

The fourth proportional to 31,410.24, 43,326.90 and 18,654.78 is: 25,732.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,410.24 : 43,326.90 = 18,654.78 : x
  2. Step 2: Convert to fraction form
    31,410.24/43,326.90 = 18,654.78/x
  3. Step 3: Cross multiply
    31,410.24x = 43,326.90 × 18,654.78
  4. Step 4: Simplify right side
    31,410.24x = 808,253,787.58
  5. Step 5: Solve for x
    x = 808,253,787.58/31,410.24
  6. Step 6: Final answer
    x = 25,732.17

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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.