Home / 31,431.02-43,371.15-18,001.46

Finding the Fourth Proportional to 31,431.02, 43,371.15 and 18,001.46

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Solution

The fourth proportional to 31,431.02, 43,371.15 and 18,001.46 is: 24,839.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.02 : 43,371.15 = 18,001.46 : x
  2. Step 2: Convert to fraction form
    31,431.02/43,371.15 = 18,001.46/x
  3. Step 3: Cross multiply
    31,431.02x = 43,371.15 × 18,001.46
  4. Step 4: Simplify right side
    31,431.02x = 780,743,805.02
  5. Step 5: Solve for x
    x = 780,743,805.02/31,431.02
  6. Step 6: Final answer
    x = 24,839.92

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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.