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Finding the Fourth Proportional to 10,908, 15,053.36 and 5,940.32

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Solution

The fourth proportional to 10,908, 15,053.36 and 5,940.32 is: 8,197.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908 : 15,053.36 = 5,940.32 : x
  2. Step 2: Convert to fraction form
    10,908/15,053.36 = 5,940.32/x
  3. Step 3: Cross multiply
    10,908x = 15,053.36 × 5,940.32
  4. Step 4: Simplify right side
    10,908x = 89,421,775.48
  5. Step 5: Solve for x
    x = 89,421,775.48/10,908
  6. Step 6: Final answer
    x = 8,197.82

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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.