Home / 18,891.24-28,446.66-13,995.60

Finding the Fourth Proportional to 18,891.24, 28,446.66 and 13,995.60

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Solution

The fourth proportional to 18,891.24, 28,446.66 and 13,995.60 is: 21,074.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.24 : 28,446.66 = 13,995.60 : x
  2. Step 2: Convert to fraction form
    18,891.24/28,446.66 = 13,995.60/x
  3. Step 3: Cross multiply
    18,891.24x = 28,446.66 × 13,995.60
  4. Step 4: Simplify right side
    18,891.24x = 398,128,074.70
  5. Step 5: Solve for x
    x = 398,128,074.70/18,891.24
  6. Step 6: Final answer
    x = 21,074.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.