Home / 11,338.28-15,644.40-6,620.42

Finding the Fourth Proportional to 11,338.28, 15,644.40 and 6,620.42

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Solution

The fourth proportional to 11,338.28, 15,644.40 and 6,620.42 is: 9,134.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,338.28 : 15,644.40 = 6,620.42 : x
  2. Step 2: Convert to fraction form
    11,338.28/15,644.40 = 6,620.42/x
  3. Step 3: Cross multiply
    11,338.28x = 15,644.40 × 6,620.42
  4. Step 4: Simplify right side
    11,338.28x = 103,572,498.65
  5. Step 5: Solve for x
    x = 103,572,498.65/11,338.28
  6. Step 6: Final answer
    x = 9,134.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.