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Finding the Fourth Proportional to 28,252.32, 38,978.54 and 16,144.11

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Solution

The fourth proportional to 28,252.32, 38,978.54 and 16,144.11 is: 22,273.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.32 : 38,978.54 = 16,144.11 : x
  2. Step 2: Convert to fraction form
    28,252.32/38,978.54 = 16,144.11/x
  3. Step 3: Cross multiply
    28,252.32x = 38,978.54 × 16,144.11
  4. Step 4: Simplify right side
    28,252.32x = 629,273,756.68
  5. Step 5: Solve for x
    x = 629,273,756.68/28,252.32
  6. Step 6: Final answer
    x = 22,273.35

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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.