Home / 31,102.20-42,921.18-16,955.04

Finding the Fourth Proportional to 31,102.20, 42,921.18 and 16,955.04

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Solution

The fourth proportional to 31,102.20, 42,921.18 and 16,955.04 is: 23,398.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,102.20 : 42,921.18 = 16,955.04 : x
  2. Step 2: Convert to fraction form
    31,102.20/42,921.18 = 16,955.04/x
  3. Step 3: Cross multiply
    31,102.20x = 42,921.18 × 16,955.04
  4. Step 4: Simplify right side
    31,102.20x = 727,730,323.75
  5. Step 5: Solve for x
    x = 727,730,323.75/31,102.20
  6. Step 6: Final answer
    x = 23,398.03

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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.