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Finding the Fourth Proportional to 20,337.40, 30,506.10 and 7,191.10

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Solution

The fourth proportional to 20,337.40, 30,506.10 and 7,191.10 is: 10,786.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.40 : 30,506.10 = 7,191.10 : x
  2. Step 2: Convert to fraction form
    20,337.40/30,506.10 = 7,191.10/x
  3. Step 3: Cross multiply
    20,337.40x = 30,506.10 × 7,191.10
  4. Step 4: Simplify right side
    20,337.40x = 219,372,415.71
  5. Step 5: Solve for x
    x = 219,372,415.71/20,337.40
  6. Step 6: Final answer
    x = 10,786.65

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Similar ratio
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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.