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Finding the Fourth Proportional to 8,994.80, 13,492.20 and 8,654.60

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Solution

The fourth proportional to 8,994.80, 13,492.20 and 8,654.60 is: 12,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,994.80 : 13,492.20 = 8,654.60 : x
  2. Step 2: Convert to fraction form
    8,994.80/13,492.20 = 8,654.60/x
  3. Step 3: Cross multiply
    8,994.80x = 13,492.20 × 8,654.60
  4. Step 4: Simplify right side
    8,994.80x = 116,769,594.12
  5. Step 5: Solve for x
    x = 116,769,594.12/8,994.80
  6. Step 6: Final answer
    x = 12,981.90

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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.