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Finding the Fourth Proportional to 15,978.98, 22,040.70 and 10,601.30

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Solution

The fourth proportional to 15,978.98, 22,040.70 and 10,601.30 is: 14,622.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.98 : 22,040.70 = 10,601.30 : x
  2. Step 2: Convert to fraction form
    15,978.98/22,040.70 = 10,601.30/x
  3. Step 3: Cross multiply
    15,978.98x = 22,040.70 × 10,601.30
  4. Step 4: Simplify right side
    15,978.98x = 233,660,072.91
  5. Step 5: Solve for x
    x = 233,660,072.91/15,978.98
  6. Step 6: Final answer
    x = 14,622.97

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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.