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Finding the Fourth Proportional to 28,191.92, 38,906.06 and 16,255.22

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Solution

The fourth proportional to 28,191.92, 38,906.06 and 16,255.22 is: 22,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.92 : 38,906.06 = 16,255.22 : x
  2. Step 2: Convert to fraction form
    28,191.92/38,906.06 = 16,255.22/x
  3. Step 3: Cross multiply
    28,191.92x = 38,906.06 × 16,255.22
  4. Step 4: Simplify right side
    28,191.92x = 632,426,288.83
  5. Step 5: Solve for x
    x = 632,426,288.83/28,191.92
  6. Step 6: Final answer
    x = 22,432.90

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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.