Home / 11,180.81-15,443.04-8,151.13

Finding the Fourth Proportional to 11,180.81, 15,443.04 and 8,151.13

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Solution

The fourth proportional to 11,180.81, 15,443.04 and 8,151.13 is: 11,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,180.81 : 15,443.04 = 8,151.13 : x
  2. Step 2: Convert to fraction form
    11,180.81/15,443.04 = 8,151.13/x
  3. Step 3: Cross multiply
    11,180.81x = 15,443.04 × 8,151.13
  4. Step 4: Simplify right side
    11,180.81x = 125,878,108.66
  5. Step 5: Solve for x
    x = 125,878,108.66/11,180.81
  6. Step 6: Final answer
    x = 11,258.41

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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.