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Finding the Fourth Proportional to 18,772.72, 28,191.29 and 16,669.10

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Solution

The fourth proportional to 18,772.72, 28,191.29 and 16,669.10 is: 25,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.72 : 28,191.29 = 16,669.10 : x
  2. Step 2: Convert to fraction form
    18,772.72/28,191.29 = 16,669.10/x
  3. Step 3: Cross multiply
    18,772.72x = 28,191.29 × 16,669.10
  4. Step 4: Simplify right side
    18,772.72x = 469,923,419.27
  5. Step 5: Solve for x
    x = 469,923,419.27/18,772.72
  6. Step 6: Final answer
    x = 25,032.25

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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.