Home / 11,118.47-15,328.47-7,132.66

Finding the Fourth Proportional to 11,118.47, 15,328.47 and 7,132.66

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Solution

The fourth proportional to 11,118.47, 15,328.47 and 7,132.66 is: 9,833.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.47 : 15,328.47 = 7,132.66 : x
  2. Step 2: Convert to fraction form
    11,118.47/15,328.47 = 7,132.66/x
  3. Step 3: Cross multiply
    11,118.47x = 15,328.47 × 7,132.66
  4. Step 4: Simplify right side
    11,118.47x = 109,332,753.26
  5. Step 5: Solve for x
    x = 109,332,753.26/11,118.47
  6. Step 6: Final answer
    x = 9,833.44

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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.