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Finding the Fourth Proportional to 14,661.97, 21,989.59 and 8,740.53

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Solution

The fourth proportional to 14,661.97, 21,989.59 and 8,740.53 is: 13,108.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,661.97 : 21,989.59 = 8,740.53 : x
  2. Step 2: Convert to fraction form
    14,661.97/21,989.59 = 8,740.53/x
  3. Step 3: Cross multiply
    14,661.97x = 21,989.59 × 8,740.53
  4. Step 4: Simplify right side
    14,661.97x = 192,200,627.38
  5. Step 5: Solve for x
    x = 192,200,627.38/14,661.97
  6. Step 6: Final answer
    x = 13,108.78

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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.