Home / 8,972.20-13,458.30-8,165.80

Finding the Fourth Proportional to 8,972.20, 13,458.30 and 8,165.80

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Solution

The fourth proportional to 8,972.20, 13,458.30 and 8,165.80 is: 12,248.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.20 : 13,458.30 = 8,165.80 : x
  2. Step 2: Convert to fraction form
    8,972.20/13,458.30 = 8,165.80/x
  3. Step 3: Cross multiply
    8,972.20x = 13,458.30 × 8,165.80
  4. Step 4: Simplify right side
    8,972.20x = 109,897,786.14
  5. Step 5: Solve for x
    x = 109,897,786.14/8,972.20
  6. Step 6: Final answer
    x = 12,248.70

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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.