Home / 31,432.25-43,374.56-18,000.42

Finding the Fourth Proportional to 31,432.25, 43,374.56 and 18,000.42

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Solution

The fourth proportional to 31,432.25, 43,374.56 and 18,000.42 is: 24,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,432.25 : 43,374.56 = 18,000.42 : x
  2. Step 2: Convert to fraction form
    31,432.25/43,374.56 = 18,000.42/x
  3. Step 3: Cross multiply
    31,432.25x = 43,374.56 × 18,000.42
  4. Step 4: Simplify right side
    31,432.25x = 780,760,342.32
  5. Step 5: Solve for x
    x = 780,760,342.32/31,432.25
  6. Step 6: Final answer
    x = 24,839.47

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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.