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Finding the Fourth Proportional to 9,956.90, 14,915.10 and 7,986.98

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Solution

The fourth proportional to 9,956.90, 14,915.10 and 7,986.98 is: 11,964.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,956.90 : 14,915.10 = 7,986.98 : x
  2. Step 2: Convert to fraction form
    9,956.90/14,915.10 = 7,986.98/x
  3. Step 3: Cross multiply
    9,956.90x = 14,915.10 × 7,986.98
  4. Step 4: Simplify right side
    9,956.90x = 119,126,605.40
  5. Step 5: Solve for x
    x = 119,126,605.40/9,956.90
  6. Step 6: Final answer
    x = 11,964.23

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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.