Home / 31,439.28-43,385.04-17,291.28

Finding the Fourth Proportional to 31,439.28, 43,385.04 and 17,291.28

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Solution

The fourth proportional to 31,439.28, 43,385.04 and 17,291.28 is: 23,861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439.28 : 43,385.04 = 17,291.28 : x
  2. Step 2: Convert to fraction form
    31,439.28/43,385.04 = 17,291.28/x
  3. Step 3: Cross multiply
    31,439.28x = 43,385.04 × 17,291.28
  4. Step 4: Simplify right side
    31,439.28x = 750,182,874.45
  5. Step 5: Solve for x
    x = 750,182,874.45/31,439.28
  6. Step 6: Final answer
    x = 23,861.32

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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.