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Finding the Fourth Proportional to 10,620.16, 14,662.38 and 6,844.66

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Solution

The fourth proportional to 10,620.16, 14,662.38 and 6,844.66 is: 9,449.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.16 : 14,662.38 = 6,844.66 : x
  2. Step 2: Convert to fraction form
    10,620.16/14,662.38 = 6,844.66/x
  3. Step 3: Cross multiply
    10,620.16x = 14,662.38 × 6,844.66
  4. Step 4: Simplify right side
    10,620.16x = 100,359,005.89
  5. Step 5: Solve for x
    x = 100,359,005.89/10,620.16
  6. Step 6: Final answer
    x = 9,449.86

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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.