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Finding the Fourth Proportional to 20,230.40, 30,302.40 and 16,774.40

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Solution

The fourth proportional to 20,230.40, 30,302.40 and 16,774.40 is: 25,125.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.40 : 30,302.40 = 16,774.40 : x
  2. Step 2: Convert to fraction form
    20,230.40/30,302.40 = 16,774.40/x
  3. Step 3: Cross multiply
    20,230.40x = 30,302.40 × 16,774.40
  4. Step 4: Simplify right side
    20,230.40x = 508,304,578.56
  5. Step 5: Solve for x
    x = 508,304,578.56/20,230.40
  6. Step 6: Final answer
    x = 25,125.78

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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.