Home / 28,505.12-39,327.46-18,446.28

Finding the Fourth Proportional to 28,505.12, 39,327.46 and 18,446.28

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Solution

The fourth proportional to 28,505.12, 39,327.46 and 18,446.28 is: 25,449.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.12 : 39,327.46 = 18,446.28 : x
  2. Step 2: Convert to fraction form
    28,505.12/39,327.46 = 18,446.28/x
  3. Step 3: Cross multiply
    28,505.12x = 39,327.46 × 18,446.28
  4. Step 4: Simplify right side
    28,505.12x = 725,445,338.85
  5. Step 5: Solve for x
    x = 725,445,338.85/28,505.12
  6. Step 6: Final answer
    x = 25,449.65

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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.