Home / 28,295.52-39,049.04-15,720.24

Finding the Fourth Proportional to 28,295.52, 39,049.04 and 15,720.24

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Solution

The fourth proportional to 28,295.52, 39,049.04 and 15,720.24 is: 21,694.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,295.52 : 39,049.04 = 15,720.24 : x
  2. Step 2: Convert to fraction form
    28,295.52/39,049.04 = 15,720.24/x
  3. Step 3: Cross multiply
    28,295.52x = 39,049.04 × 15,720.24
  4. Step 4: Simplify right side
    28,295.52x = 613,860,280.57
  5. Step 5: Solve for x
    x = 613,860,280.57/28,295.52
  6. Step 6: Final answer
    x = 21,694.61

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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.