Home / 13,219.52-18,243.05-7,251.21

Finding the Fourth Proportional to 13,219.52, 18,243.05 and 7,251.21

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Solution

The fourth proportional to 13,219.52, 18,243.05 and 7,251.21 is: 10,006.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.52 : 18,243.05 = 7,251.21 : x
  2. Step 2: Convert to fraction form
    13,219.52/18,243.05 = 7,251.21/x
  3. Step 3: Cross multiply
    13,219.52x = 18,243.05 × 7,251.21
  4. Step 4: Simplify right side
    13,219.52x = 132,284,150.33
  5. Step 5: Solve for x
    x = 132,284,150.33/13,219.52
  6. Step 6: Final answer
    x = 10,006.73

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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.