Home / 28,812.75-43,236.14-12,171.71

Finding the Fourth Proportional to 28,812.75, 43,236.14 and 12,171.71

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Solution

The fourth proportional to 28,812.75, 43,236.14 and 12,171.71 is: 18,264.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.75 : 43,236.14 = 12,171.71 : x
  2. Step 2: Convert to fraction form
    28,812.75/43,236.14 = 12,171.71/x
  3. Step 3: Cross multiply
    28,812.75x = 43,236.14 × 12,171.71
  4. Step 4: Simplify right side
    28,812.75x = 526,257,480.56
  5. Step 5: Solve for x
    x = 526,257,480.56/28,812.75
  6. Step 6: Final answer
    x = 18,264.74

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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.