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Finding the Fourth Proportional to 14,487.60, 19,988.94 and 8,517.12

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Solution

The fourth proportional to 14,487.60, 19,988.94 and 8,517.12 is: 11,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.60 : 19,988.94 = 8,517.12 : x
  2. Step 2: Convert to fraction form
    14,487.60/19,988.94 = 8,517.12/x
  3. Step 3: Cross multiply
    14,487.60x = 19,988.94 × 8,517.12
  4. Step 4: Simplify right side
    14,487.60x = 170,248,200.65
  5. Step 5: Solve for x
    x = 170,248,200.65/14,487.60
  6. Step 6: Final answer
    x = 11,751.30

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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.