Home / 28,220.67-38,942.71-15,473.70

Finding the Fourth Proportional to 28,220.67, 38,942.71 and 15,473.70

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Solution

The fourth proportional to 28,220.67, 38,942.71 and 15,473.70 is: 21,352.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.67 : 38,942.71 = 15,473.70 : x
  2. Step 2: Convert to fraction form
    28,220.67/38,942.71 = 15,473.70/x
  3. Step 3: Cross multiply
    28,220.67x = 38,942.71 × 15,473.70
  4. Step 4: Simplify right side
    28,220.67x = 602,587,714.05
  5. Step 5: Solve for x
    x = 602,587,714.05/28,220.67
  6. Step 6: Final answer
    x = 21,352.71

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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.