Home / 12,113.76-18,170.64-4,320.75

Finding the Fourth Proportional to 12,113.76, 18,170.64 and 4,320.75

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Solution

The fourth proportional to 12,113.76, 18,170.64 and 4,320.75 is: 6,481.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.76 : 18,170.64 = 4,320.75 : x
  2. Step 2: Convert to fraction form
    12,113.76/18,170.64 = 4,320.75/x
  3. Step 3: Cross multiply
    12,113.76x = 18,170.64 × 4,320.75
  4. Step 4: Simplify right side
    12,113.76x = 78,510,792.78
  5. Step 5: Solve for x
    x = 78,510,792.78/12,113.76
  6. Step 6: Final answer
    x = 6,481.13

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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.