Home / 20,578.26-30,867.39-4,995.78

Finding the Fourth Proportional to 20,578.26, 30,867.39 and 4,995.78

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Solution

The fourth proportional to 20,578.26, 30,867.39 and 4,995.78 is: 7,493.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.26 : 30,867.39 = 4,995.78 : x
  2. Step 2: Convert to fraction form
    20,578.26/30,867.39 = 4,995.78/x
  3. Step 3: Cross multiply
    20,578.26x = 30,867.39 × 4,995.78
  4. Step 4: Simplify right side
    20,578.26x = 154,206,689.61
  5. Step 5: Solve for x
    x = 154,206,689.61/20,578.26
  6. Step 6: Final answer
    x = 7,493.67

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Double scale
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Similar ratio
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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.