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Finding the Fourth Proportional to 14,487.80, 19,994.48 and 8,516.48

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Solution

The fourth proportional to 14,487.80, 19,994.48 and 8,516.48 is: 11,753.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.80 : 19,994.48 = 8,516.48 : x
  2. Step 2: Convert to fraction form
    14,487.80/19,994.48 = 8,516.48/x
  3. Step 3: Cross multiply
    14,487.80x = 19,994.48 × 8,516.48
  4. Step 4: Simplify right side
    14,487.80x = 170,282,589.03
  5. Step 5: Solve for x
    x = 170,282,589.03/14,487.80
  6. Step 6: Final answer
    x = 11,753.52

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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.