Home / 20,945.38-31,423.08-6,153.97

Finding the Fourth Proportional to 20,945.38, 31,423.08 and 6,153.97

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Solution

The fourth proportional to 20,945.38, 31,423.08 and 6,153.97 is: 9,232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.38 : 31,423.08 = 6,153.97 : x
  2. Step 2: Convert to fraction form
    20,945.38/31,423.08 = 6,153.97/x
  3. Step 3: Cross multiply
    20,945.38x = 31,423.08 × 6,153.97
  4. Step 4: Simplify right side
    20,945.38x = 193,376,503.74
  5. Step 5: Solve for x
    x = 193,376,503.74/20,945.38
  6. Step 6: Final answer
    x = 9,232.42

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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.