Home / 28,234.80-38,955.60-17,620.56

Finding the Fourth Proportional to 28,234.80, 38,955.60 and 17,620.56

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Solution

The fourth proportional to 28,234.80, 38,955.60 and 17,620.56 is: 24,311.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,234.80 : 38,955.60 = 17,620.56 : x
  2. Step 2: Convert to fraction form
    28,234.80/38,955.60 = 17,620.56/x
  3. Step 3: Cross multiply
    28,234.80x = 38,955.60 × 17,620.56
  4. Step 4: Simplify right side
    28,234.80x = 686,419,487.14
  5. Step 5: Solve for x
    x = 686,419,487.14/28,234.80
  6. Step 6: Final answer
    x = 24,311.12

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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.