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Finding the Fourth Proportional to 10,908, 15,058.08 and 6,718.68

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Solution

The fourth proportional to 10,908, 15,058.08 and 6,718.68 is: 9,274.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908 : 15,058.08 = 6,718.68 : x
  2. Step 2: Convert to fraction form
    10,908/15,058.08 = 6,718.68/x
  3. Step 3: Cross multiply
    10,908x = 15,058.08 × 6,718.68
  4. Step 4: Simplify right side
    10,908x = 101,170,420.93
  5. Step 5: Solve for x
    x = 101,170,420.93/10,908
  6. Step 6: Final answer
    x = 9,274.88

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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.