Home / 13,219.64-18,243.52-7,251.25

Finding the Fourth Proportional to 13,219.64, 18,243.52 and 7,251.25

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Solution

The fourth proportional to 13,219.64, 18,243.52 and 7,251.25 is: 10,006.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.64 : 18,243.52 = 7,251.25 : x
  2. Step 2: Convert to fraction form
    13,219.64/18,243.52 = 7,251.25/x
  3. Step 3: Cross multiply
    13,219.64x = 18,243.52 × 7,251.25
  4. Step 4: Simplify right side
    13,219.64x = 132,288,324.40
  5. Step 5: Solve for x
    x = 132,288,324.40/13,219.64
  6. Step 6: Final answer
    x = 10,006.95

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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.