Home / 20,328.11-30,470.56-9,791.56

Finding the Fourth Proportional to 20,328.11, 30,470.56 and 9,791.56

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Solution

The fourth proportional to 20,328.11, 30,470.56 and 9,791.56 is: 14,676.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.11 : 30,470.56 = 9,791.56 : x
  2. Step 2: Convert to fraction form
    20,328.11/30,470.56 = 9,791.56/x
  3. Step 3: Cross multiply
    20,328.11x = 30,470.56 × 9,791.56
  4. Step 4: Simplify right side
    20,328.11x = 298,354,316.47
  5. Step 5: Solve for x
    x = 298,354,316.47/20,328.11
  6. Step 6: Final answer
    x = 14,676.93

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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.