Home / 20,279.28-30,402.82-13,302.75

Finding the Fourth Proportional to 20,279.28, 30,402.82 and 13,302.75

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Solution

The fourth proportional to 20,279.28, 30,402.82 and 13,302.75 is: 19,943.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.28 : 30,402.82 = 13,302.75 : x
  2. Step 2: Convert to fraction form
    20,279.28/30,402.82 = 13,302.75/x
  3. Step 3: Cross multiply
    20,279.28x = 30,402.82 × 13,302.75
  4. Step 4: Simplify right side
    20,279.28x = 404,441,047.24
  5. Step 5: Solve for x
    x = 404,441,047.24/20,279.28
  6. Step 6: Final answer
    x = 19,943.56

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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.