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Finding the Fourth Proportional to 8,817.60, 13,152.12 and 8,205.24

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Solution

The fourth proportional to 8,817.60, 13,152.12 and 8,205.24 is: 12,238.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.60 : 13,152.12 = 8,205.24 : x
  2. Step 2: Convert to fraction form
    8,817.60/13,152.12 = 8,205.24/x
  3. Step 3: Cross multiply
    8,817.60x = 13,152.12 × 8,205.24
  4. Step 4: Simplify right side
    8,817.60x = 107,916,301.11
  5. Step 5: Solve for x
    x = 107,916,301.11/8,817.60
  6. Step 6: Final answer
    x = 12,238.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.