Home / 28,232.94-38,944.35-18,672.78

Finding the Fourth Proportional to 28,232.94, 38,944.35 and 18,672.78

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Solution

The fourth proportional to 28,232.94, 38,944.35 and 18,672.78 is: 25,757.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,232.94 : 38,944.35 = 18,672.78 : x
  2. Step 2: Convert to fraction form
    28,232.94/38,944.35 = 18,672.78/x
  3. Step 3: Cross multiply
    28,232.94x = 38,944.35 × 18,672.78
  4. Step 4: Simplify right side
    28,232.94x = 727,199,279.79
  5. Step 5: Solve for x
    x = 727,199,279.79/28,232.94
  6. Step 6: Final answer
    x = 25,757.12

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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.