Home / 18,726.28-28,087.88-5,578.66

Finding the Fourth Proportional to 18,726.28, 28,087.88 and 5,578.66

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Solution

The fourth proportional to 18,726.28, 28,087.88 and 5,578.66 is: 8,367.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.28 : 28,087.88 = 5,578.66 : x
  2. Step 2: Convert to fraction form
    18,726.28/28,087.88 = 5,578.66/x
  3. Step 3: Cross multiply
    18,726.28x = 28,087.88 × 5,578.66
  4. Step 4: Simplify right side
    18,726.28x = 156,692,732.64
  5. Step 5: Solve for x
    x = 156,692,732.64/18,726.28
  6. Step 6: Final answer
    x = 8,367.53

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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.