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Finding the Fourth Proportional to 14,499.70, 20,009.25 and 8,449.55

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Solution

The fourth proportional to 14,499.70, 20,009.25 and 8,449.55 is: 11,660.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,499.70 : 20,009.25 = 8,449.55 : x
  2. Step 2: Convert to fraction form
    14,499.70/20,009.25 = 8,449.55/x
  3. Step 3: Cross multiply
    14,499.70x = 20,009.25 × 8,449.55
  4. Step 4: Simplify right side
    14,499.70x = 169,069,116.09
  5. Step 5: Solve for x
    x = 169,069,116.09/14,499.70
  6. Step 6: Final answer
    x = 11,660.18

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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.