Home / 13,227.06-18,251.42-7,920.75

Finding the Fourth Proportional to 13,227.06, 18,251.42 and 7,920.75

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Solution

The fourth proportional to 13,227.06, 18,251.42 and 7,920.75 is: 10,929.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,227.06 : 18,251.42 = 7,920.75 : x
  2. Step 2: Convert to fraction form
    13,227.06/18,251.42 = 7,920.75/x
  3. Step 3: Cross multiply
    13,227.06x = 18,251.42 × 7,920.75
  4. Step 4: Simplify right side
    13,227.06x = 144,564,895.36
  5. Step 5: Solve for x
    x = 144,564,895.36/13,227.06
  6. Step 6: Final answer
    x = 10,929.48

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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.