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Finding the Fourth Proportional to 8,817.66, 13,213.53 and 8,551.58

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Solution

The fourth proportional to 8,817.66, 13,213.53 and 8,551.58 is: 12,814.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.66 : 13,213.53 = 8,551.58 : x
  2. Step 2: Convert to fraction form
    8,817.66/13,213.53 = 8,551.58/x
  3. Step 3: Cross multiply
    8,817.66x = 13,213.53 × 8,551.58
  4. Step 4: Simplify right side
    8,817.66x = 112,996,492.81
  5. Step 5: Solve for x
    x = 112,996,492.81/8,817.66
  6. Step 6: Final answer
    x = 12,814.79

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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.