Home / 28,446.05-39,246.18-18,380.42

Finding the Fourth Proportional to 28,446.05, 39,246.18 and 18,380.42

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Solution

The fourth proportional to 28,446.05, 39,246.18 and 18,380.42 is: 25,358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.05 : 39,246.18 = 18,380.42 : x
  2. Step 2: Convert to fraction form
    28,446.05/39,246.18 = 18,380.42/x
  3. Step 3: Cross multiply
    28,446.05x = 39,246.18 × 18,380.42
  4. Step 4: Simplify right side
    28,446.05x = 721,361,075.56
  5. Step 5: Solve for x
    x = 721,361,075.56/28,446.05
  6. Step 6: Final answer
    x = 25,358.92

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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.