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Finding the Fourth Proportional to 8,806.10, 13,209.15 and 8,114.90

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Solution

The fourth proportional to 8,806.10, 13,209.15 and 8,114.90 is: 12,172.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.10 : 13,209.15 = 8,114.90 : x
  2. Step 2: Convert to fraction form
    8,806.10/13,209.15 = 8,114.90/x
  3. Step 3: Cross multiply
    8,806.10x = 13,209.15 × 8,114.90
  4. Step 4: Simplify right side
    8,806.10x = 107,190,931.34
  5. Step 5: Solve for x
    x = 107,190,931.34/8,806.10
  6. Step 6: Final answer
    x = 12,172.35

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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.