Home / 28,377.22-39,160.19-15,630.16

Finding the Fourth Proportional to 28,377.22, 39,160.19 and 15,630.16

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Solution

The fourth proportional to 28,377.22, 39,160.19 and 15,630.16 is: 21,569.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.22 : 39,160.19 = 15,630.16 : x
  2. Step 2: Convert to fraction form
    28,377.22/39,160.19 = 15,630.16/x
  3. Step 3: Cross multiply
    28,377.22x = 39,160.19 × 15,630.16
  4. Step 4: Simplify right side
    28,377.22x = 612,080,035.33
  5. Step 5: Solve for x
    x = 612,080,035.33/28,377.22
  6. Step 6: Final answer
    x = 21,569.42

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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.