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Finding the Fourth Proportional to 8,825.40, 13,238.10 and 8,695.80

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Solution

The fourth proportional to 8,825.40, 13,238.10 and 8,695.80 is: 13,043.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,825.40 : 13,238.10 = 8,695.80 : x
  2. Step 2: Convert to fraction form
    8,825.40/13,238.10 = 8,695.80/x
  3. Step 3: Cross multiply
    8,825.40x = 13,238.10 × 8,695.80
  4. Step 4: Simplify right side
    8,825.40x = 115,115,869.98
  5. Step 5: Solve for x
    x = 115,115,869.98/8,825.40
  6. Step 6: Final answer
    x = 13,043.70

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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.