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Finding the Fourth Proportional to 20,026.40, 30,104.40 and 14,223.20

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Solution

The fourth proportional to 20,026.40, 30,104.40 and 14,223.20 is: 21,380.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,026.40 : 30,104.40 = 14,223.20 : x
  2. Step 2: Convert to fraction form
    20,026.40/30,104.40 = 14,223.20/x
  3. Step 3: Cross multiply
    20,026.40x = 30,104.40 × 14,223.20
  4. Step 4: Simplify right side
    20,026.40x = 428,180,902.08
  5. Step 5: Solve for x
    x = 428,180,902.08/20,026.40
  6. Step 6: Final answer
    x = 21,380.82

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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.