Home / 28,725.57-39,642.32-15,980.22

Finding the Fourth Proportional to 28,725.57, 39,642.32 and 15,980.22

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Solution

The fourth proportional to 28,725.57, 39,642.32 and 15,980.22 is: 22,053.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.57 : 39,642.32 = 15,980.22 : x
  2. Step 2: Convert to fraction form
    28,725.57/39,642.32 = 15,980.22/x
  3. Step 3: Cross multiply
    28,725.57x = 39,642.32 × 15,980.22
  4. Step 4: Simplify right side
    28,725.57x = 633,493,034.86
  5. Step 5: Solve for x
    x = 633,493,034.86/28,725.57
  6. Step 6: Final answer
    x = 22,053.28

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Similar ratio
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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.