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Finding the Fourth Proportional to 21,672.97, 32,513.49 and 6,877.90

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Solution

The fourth proportional to 21,672.97, 32,513.49 and 6,877.90 is: 10,318.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.97 : 32,513.49 = 6,877.90 : x
  2. Step 2: Convert to fraction form
    21,672.97/32,513.49 = 6,877.90/x
  3. Step 3: Cross multiply
    21,672.97x = 32,513.49 × 6,877.90
  4. Step 4: Simplify right side
    21,672.97x = 223,624,532.87
  5. Step 5: Solve for x
    x = 223,624,532.87/21,672.97
  6. Step 6: Final answer
    x = 10,318.13

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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.