Home / 28,149.92-38,847.52-15,574.80

Finding the Fourth Proportional to 28,149.92, 38,847.52 and 15,574.80

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Solution

The fourth proportional to 28,149.92, 38,847.52 and 15,574.80 is: 21,493.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.92 : 38,847.52 = 15,574.80 : x
  2. Step 2: Convert to fraction form
    28,149.92/38,847.52 = 15,574.80/x
  3. Step 3: Cross multiply
    28,149.92x = 38,847.52 × 15,574.80
  4. Step 4: Simplify right side
    28,149.92x = 605,042,354.50
  5. Step 5: Solve for x
    x = 605,042,354.50/28,149.92
  6. Step 6: Final answer
    x = 21,493.57

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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.