Home / 18,891.36-28,331.28-15,184.80

Finding the Fourth Proportional to 18,891.36, 28,331.28 and 15,184.80

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Solution

The fourth proportional to 18,891.36, 28,331.28 and 15,184.80 is: 22,772.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.36 : 28,331.28 = 15,184.80 : x
  2. Step 2: Convert to fraction form
    18,891.36/28,331.28 = 15,184.80/x
  3. Step 3: Cross multiply
    18,891.36x = 28,331.28 × 15,184.80
  4. Step 4: Simplify right side
    18,891.36x = 430,204,820.54
  5. Step 5: Solve for x
    x = 430,204,820.54/18,891.36
  6. Step 6: Final answer
    x = 22,772.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.