Home / 10,905.38-15,049.91-6,429.32

Finding the Fourth Proportional to 10,905.38, 15,049.91 and 6,429.32

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Solution

The fourth proportional to 10,905.38, 15,049.91 and 6,429.32 is: 8,872.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.38 : 15,049.91 = 6,429.32 : x
  2. Step 2: Convert to fraction form
    10,905.38/15,049.91 = 6,429.32/x
  3. Step 3: Cross multiply
    10,905.38x = 15,049.91 × 6,429.32
  4. Step 4: Simplify right side
    10,905.38x = 96,760,579.97
  5. Step 5: Solve for x
    x = 96,760,579.97/10,905.38
  6. Step 6: Final answer
    x = 8,872.74

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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.