Home / 30,508.44-42,105.18-18,578.76

Finding the Fourth Proportional to 30,508.44, 42,105.18 and 18,578.76

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Solution

The fourth proportional to 30,508.44, 42,105.18 and 18,578.76 is: 25,640.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,508.44 : 42,105.18 = 18,578.76 : x
  2. Step 2: Convert to fraction form
    30,508.44/42,105.18 = 18,578.76/x
  3. Step 3: Cross multiply
    30,508.44x = 42,105.18 × 18,578.76
  4. Step 4: Simplify right side
    30,508.44x = 782,262,033.98
  5. Step 5: Solve for x
    x = 782,262,033.98/30,508.44
  6. Step 6: Final answer
    x = 25,640.84

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Double scale
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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.