Home / 18,275.12-25,220.28-11,103.80

Finding the Fourth Proportional to 18,275.12, 25,220.28 and 11,103.80

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Solution

The fourth proportional to 18,275.12, 25,220.28 and 11,103.80 is: 15,323.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.12 : 25,220.28 = 11,103.80 : x
  2. Step 2: Convert to fraction form
    18,275.12/25,220.28 = 11,103.80/x
  3. Step 3: Cross multiply
    18,275.12x = 25,220.28 × 11,103.80
  4. Step 4: Simplify right side
    18,275.12x = 280,040,945.06
  5. Step 5: Solve for x
    x = 280,040,945.06/18,275.12
  6. Step 6: Final answer
    x = 15,323.62

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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.