Home / 28,550.44-39,400.66-15,630.62

Finding the Fourth Proportional to 28,550.44, 39,400.66 and 15,630.62

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Solution

The fourth proportional to 28,550.44, 39,400.66 and 15,630.62 is: 21,570.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,550.44 : 39,400.66 = 15,630.62 : x
  2. Step 2: Convert to fraction form
    28,550.44/39,400.66 = 15,630.62/x
  3. Step 3: Cross multiply
    28,550.44x = 39,400.66 × 15,630.62
  4. Step 4: Simplify right side
    28,550.44x = 615,856,744.21
  5. Step 5: Solve for x
    x = 615,856,744.21/28,550.44
  6. Step 6: Final answer
    x = 21,570.83

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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.