Home / 11,387.48-15,712.04-6,911.12

Finding the Fourth Proportional to 11,387.48, 15,712.04 and 6,911.12

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Solution

The fourth proportional to 11,387.48, 15,712.04 and 6,911.12 is: 9,535.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.48 : 15,712.04 = 6,911.12 : x
  2. Step 2: Convert to fraction form
    11,387.48/15,712.04 = 6,911.12/x
  3. Step 3: Cross multiply
    11,387.48x = 15,712.04 × 6,911.12
  4. Step 4: Simplify right side
    11,387.48x = 108,587,850.44
  5. Step 5: Solve for x
    x = 108,587,850.44/11,387.48
  6. Step 6: Final answer
    x = 9,535.73

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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.