Home / 12,113.85-18,170.78-3,348.76

Finding the Fourth Proportional to 12,113.85, 18,170.78 and 3,348.76

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Solution

The fourth proportional to 12,113.85, 18,170.78 and 3,348.76 is: 5,023.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.85 : 18,170.78 = 3,348.76 : x
  2. Step 2: Convert to fraction form
    12,113.85/18,170.78 = 3,348.76/x
  3. Step 3: Cross multiply
    12,113.85x = 18,170.78 × 3,348.76
  4. Step 4: Simplify right side
    12,113.85x = 60,849,581.23
  5. Step 5: Solve for x
    x = 60,849,581.23/12,113.85
  6. Step 6: Final answer
    x = 5,023.14

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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.