Home / 20,330.38-30,488.03-6,999.65

Finding the Fourth Proportional to 20,330.38, 30,488.03 and 6,999.65

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Solution

The fourth proportional to 20,330.38, 30,488.03 and 6,999.65 is: 10,496.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.38 : 30,488.03 = 6,999.65 : x
  2. Step 2: Convert to fraction form
    20,330.38/30,488.03 = 6,999.65/x
  3. Step 3: Cross multiply
    20,330.38x = 30,488.03 × 6,999.65
  4. Step 4: Simplify right side
    20,330.38x = 213,405,539.19
  5. Step 5: Solve for x
    x = 213,405,539.19/20,330.38
  6. Step 6: Final answer
    x = 10,496.88

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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.