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Finding the Fourth Proportional to 10,908, 15,054.48 and 6,714.72

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Solution

The fourth proportional to 10,908, 15,054.48 and 6,714.72 is: 9,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908 : 15,054.48 = 6,714.72 : x
  2. Step 2: Convert to fraction form
    10,908/15,054.48 = 6,714.72/x
  3. Step 3: Cross multiply
    10,908x = 15,054.48 × 6,714.72
  4. Step 4: Simplify right side
    10,908x = 101,086,617.95
  5. Step 5: Solve for x
    x = 101,086,617.95/10,908
  6. Step 6: Final answer
    x = 9,267.20

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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.