Home / 28,947.28-43,414.35-8,172.40

Finding the Fourth Proportional to 28,947.28, 43,414.35 and 8,172.40

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Solution

The fourth proportional to 28,947.28, 43,414.35 and 8,172.40 is: 12,256.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.28 : 43,414.35 = 8,172.40 : x
  2. Step 2: Convert to fraction form
    28,947.28/43,414.35 = 8,172.40/x
  3. Step 3: Cross multiply
    28,947.28x = 43,414.35 × 8,172.40
  4. Step 4: Simplify right side
    28,947.28x = 354,799,433.94
  5. Step 5: Solve for x
    x = 354,799,433.94/28,947.28
  6. Step 6: Final answer
    x = 12,256.75

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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.