Home / 10,963.20-15,129.60-6,246.72

Finding the Fourth Proportional to 10,963.20, 15,129.60 and 6,246.72

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Solution

The fourth proportional to 10,963.20, 15,129.60 and 6,246.72 is: 8,620.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,963.20 : 15,129.60 = 6,246.72 : x
  2. Step 2: Convert to fraction form
    10,963.20/15,129.60 = 6,246.72/x
  3. Step 3: Cross multiply
    10,963.20x = 15,129.60 × 6,246.72
  4. Step 4: Simplify right side
    10,963.20x = 94,510,374.91
  5. Step 5: Solve for x
    x = 94,510,374.91/10,963.20
  6. Step 6: Final answer
    x = 8,620.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.