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Finding the Fourth Proportional to 20,337.56, 30,506.16 and 7,186.76

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Solution

The fourth proportional to 20,337.56, 30,506.16 and 7,186.76 is: 10,780.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.56 : 30,506.16 = 7,186.76 : x
  2. Step 2: Convert to fraction form
    20,337.56/30,506.16 = 7,186.76/x
  3. Step 3: Cross multiply
    20,337.56x = 30,506.16 × 7,186.76
  4. Step 4: Simplify right side
    20,337.56x = 219,240,450.44
  5. Step 5: Solve for x
    x = 219,240,450.44/20,337.56
  6. Step 6: Final answer
    x = 10,780.08

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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.