Home / 28,939.46-39,954.40-22,212.20

Finding the Fourth Proportional to 28,939.46, 39,954.40 and 22,212.20

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Solution

The fourth proportional to 28,939.46, 39,954.40 and 22,212.20 is: 30,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.46 : 39,954.40 = 22,212.20 : x
  2. Step 2: Convert to fraction form
    28,939.46/39,954.40 = 22,212.20/x
  3. Step 3: Cross multiply
    28,939.46x = 39,954.40 × 22,212.20
  4. Step 4: Simplify right side
    28,939.46x = 887,475,123.68
  5. Step 5: Solve for x
    x = 887,475,123.68/28,939.46
  6. Step 6: Final answer
    x = 30,666.61

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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.