Home / 31,119.96-42,945.18-16,972.92

Finding the Fourth Proportional to 31,119.96, 42,945.18 and 16,972.92

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Solution

The fourth proportional to 31,119.96, 42,945.18 and 16,972.92 is: 23,422.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,119.96 : 42,945.18 = 16,972.92 : x
  2. Step 2: Convert to fraction form
    31,119.96/42,945.18 = 16,972.92/x
  3. Step 3: Cross multiply
    31,119.96x = 42,945.18 × 16,972.92
  4. Step 4: Simplify right side
    31,119.96x = 728,905,104.53
  5. Step 5: Solve for x
    x = 728,905,104.53/31,119.96
  6. Step 6: Final answer
    x = 23,422.43

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Double scale
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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.