Home / 11,419.20-15,739.66-7,641.04

Finding the Fourth Proportional to 11,419.20, 15,739.66 and 7,641.04

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Solution

The fourth proportional to 11,419.20, 15,739.66 and 7,641.04 is: 10,532.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,419.20 : 15,739.66 = 7,641.04 : x
  2. Step 2: Convert to fraction form
    11,419.20/15,739.66 = 7,641.04/x
  3. Step 3: Cross multiply
    11,419.20x = 15,739.66 × 7,641.04
  4. Step 4: Simplify right side
    11,419.20x = 120,267,371.65
  5. Step 5: Solve for x
    x = 120,267,371.65/11,419.20
  6. Step 6: Final answer
    x = 10,532.03

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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.