Home / 12,508.39-18,765.11-5,113.45

Finding the Fourth Proportional to 12,508.39, 18,765.11 and 5,113.45

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Solution

The fourth proportional to 12,508.39, 18,765.11 and 5,113.45 is: 7,671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.39 : 18,765.11 = 5,113.45 : x
  2. Step 2: Convert to fraction form
    12,508.39/18,765.11 = 5,113.45/x
  3. Step 3: Cross multiply
    12,508.39x = 18,765.11 × 5,113.45
  4. Step 4: Simplify right side
    12,508.39x = 95,954,451.73
  5. Step 5: Solve for x
    x = 95,954,451.73/12,508.39
  6. Step 6: Final answer
    x = 7,671.21

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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.