Home / 19,147.53-28,691.28-12,112.68

Finding the Fourth Proportional to 19,147.53, 28,691.28 and 12,112.68

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Solution

The fourth proportional to 19,147.53, 28,691.28 and 12,112.68 is: 18,150.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.53 : 28,691.28 = 12,112.68 : x
  2. Step 2: Convert to fraction form
    19,147.53/28,691.28 = 12,112.68/x
  3. Step 3: Cross multiply
    19,147.53x = 28,691.28 × 12,112.68
  4. Step 4: Simplify right side
    19,147.53x = 347,528,435.09
  5. Step 5: Solve for x
    x = 347,528,435.09/19,147.53
  6. Step 6: Final answer
    x = 18,150.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.