Home / 28,176.67-38,883.86-15,429.97

Finding the Fourth Proportional to 28,176.67, 38,883.86 and 15,429.97

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Solution

The fourth proportional to 28,176.67, 38,883.86 and 15,429.97 is: 21,293.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.67 : 38,883.86 = 15,429.97 : x
  2. Step 2: Convert to fraction form
    28,176.67/38,883.86 = 15,429.97/x
  3. Step 3: Cross multiply
    28,176.67x = 38,883.86 × 15,429.97
  4. Step 4: Simplify right side
    28,176.67x = 599,976,793.28
  5. Step 5: Solve for x
    x = 599,976,793.28/28,176.67
  6. Step 6: Final answer
    x = 21,293.39

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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.