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Finding the Fourth Proportional to 10,939.64, 15,095.07 and 6,158.88

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Solution

The fourth proportional to 10,939.64, 15,095.07 and 6,158.88 is: 8,498.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.64 : 15,095.07 = 6,158.88 : x
  2. Step 2: Convert to fraction form
    10,939.64/15,095.07 = 6,158.88/x
  3. Step 3: Cross multiply
    10,939.64x = 15,095.07 × 6,158.88
  4. Step 4: Simplify right side
    10,939.64x = 92,968,724.72
  5. Step 5: Solve for x
    x = 92,968,724.72/10,939.64
  6. Step 6: Final answer
    x = 8,498.34

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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.