Home / 20,638.41-30,957.66-7,490.79

Finding the Fourth Proportional to 20,638.41, 30,957.66 and 7,490.79

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Solution

The fourth proportional to 20,638.41, 30,957.66 and 7,490.79 is: 11,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.41 : 30,957.66 = 7,490.79 : x
  2. Step 2: Convert to fraction form
    20,638.41/30,957.66 = 7,490.79/x
  3. Step 3: Cross multiply
    20,638.41x = 30,957.66 × 7,490.79
  4. Step 4: Simplify right side
    20,638.41x = 231,897,329.95
  5. Step 5: Solve for x
    x = 231,897,329.95/20,638.41
  6. Step 6: Final answer
    x = 11,236.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.