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Finding the Fourth Proportional to 20,279.71, 30,401.93 and 9,744.45

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Solution

The fourth proportional to 20,279.71, 30,401.93 and 9,744.45 is: 14,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.71 : 30,401.93 = 9,744.45 : x
  2. Step 2: Convert to fraction form
    20,279.71/30,401.93 = 9,744.45/x
  3. Step 3: Cross multiply
    20,279.71x = 30,401.93 × 9,744.45
  4. Step 4: Simplify right side
    20,279.71x = 296,250,086.79
  5. Step 5: Solve for x
    x = 296,250,086.79/20,279.71
  6. Step 6: Final answer
    x = 14,608.20

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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.