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Finding the Fourth Proportional to 17,606, 26,390.80 and 5,915.28

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Solution

The fourth proportional to 17,606, 26,390.80 and 5,915.28 is: 8,866.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,606 : 26,390.80 = 5,915.28 : x
  2. Step 2: Convert to fraction form
    17,606/26,390.80 = 5,915.28/x
  3. Step 3: Cross multiply
    17,606x = 26,390.80 × 5,915.28
  4. Step 4: Simplify right side
    17,606x = 156,108,971.42
  5. Step 5: Solve for x
    x = 156,108,971.42/17,606
  6. Step 6: Final answer
    x = 8,866.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.