Home / 29,013.60-43,520.40-17,320.80

Finding the Fourth Proportional to 29,013.60, 43,520.40 and 17,320.80

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Solution

The fourth proportional to 29,013.60, 43,520.40 and 17,320.80 is: 25,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,013.60 : 43,520.40 = 17,320.80 : x
  2. Step 2: Convert to fraction form
    29,013.60/43,520.40 = 17,320.80/x
  3. Step 3: Cross multiply
    29,013.60x = 43,520.40 × 17,320.80
  4. Step 4: Simplify right side
    29,013.60x = 753,808,144.32
  5. Step 5: Solve for x
    x = 753,808,144.32/29,013.60
  6. Step 6: Final answer
    x = 25,981.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.