Home / 28,948.20-39,966.48-22,220.96

Finding the Fourth Proportional to 28,948.20, 39,966.48 and 22,220.96

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Solution

The fourth proportional to 28,948.20, 39,966.48 and 22,220.96 is: 30,678.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,948.20 : 39,966.48 = 22,220.96 : x
  2. Step 2: Convert to fraction form
    28,948.20/39,966.48 = 22,220.96/x
  3. Step 3: Cross multiply
    28,948.20x = 39,966.48 × 22,220.96
  4. Step 4: Simplify right side
    28,948.20x = 888,093,553.42
  5. Step 5: Solve for x
    x = 888,093,553.42/28,948.20
  6. Step 6: Final answer
    x = 30,678.71

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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.