Home / 13,562.97-18,719.11-8,111.68

Finding the Fourth Proportional to 13,562.97, 18,719.11 and 8,111.68

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Solution

The fourth proportional to 13,562.97, 18,719.11 and 8,111.68 is: 11,195.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,562.97 : 18,719.11 = 8,111.68 : x
  2. Step 2: Convert to fraction form
    13,562.97/18,719.11 = 8,111.68/x
  3. Step 3: Cross multiply
    13,562.97x = 18,719.11 × 8,111.68
  4. Step 4: Simplify right side
    13,562.97x = 151,843,432.59
  5. Step 5: Solve for x
    x = 151,843,432.59/13,562.97
  6. Step 6: Final answer
    x = 11,195.44

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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.