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Finding the Fourth Proportional to 28,191.26, 38,903.92 and 17,013.26

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Solution

The fourth proportional to 28,191.26, 38,903.92 and 17,013.26 is: 23,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.26 : 38,903.92 = 17,013.26 : x
  2. Step 2: Convert to fraction form
    28,191.26/38,903.92 = 17,013.26/x
  3. Step 3: Cross multiply
    28,191.26x = 38,903.92 × 17,013.26
  4. Step 4: Simplify right side
    28,191.26x = 661,882,505.98
  5. Step 5: Solve for x
    x = 661,882,505.98/28,191.26
  6. Step 6: Final answer
    x = 23,478.29

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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.