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Finding the Fourth Proportional to 14,869.00, 20,517.79 and 8,900.55

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Solution

The fourth proportional to 14,869.00, 20,517.79 and 8,900.55 is: 12,281.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,869.00 : 20,517.79 = 8,900.55 : x
  2. Step 2: Convert to fraction form
    14,869.00/20,517.79 = 8,900.55/x
  3. Step 3: Cross multiply
    14,869.00x = 20,517.79 × 8,900.55
  4. Step 4: Simplify right side
    14,869.00x = 182,619,524.32
  5. Step 5: Solve for x
    x = 182,619,524.32/14,869.00
  6. Step 6: Final answer
    x = 12,281.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.