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Finding the Fourth Proportional to 9,991.25, 15,003.88 and 9,573.29

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Solution

The fourth proportional to 9,991.25, 15,003.88 and 9,573.29 is: 14,376.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.25 : 15,003.88 = 9,573.29 : x
  2. Step 2: Convert to fraction form
    9,991.25/15,003.88 = 9,573.29/x
  3. Step 3: Cross multiply
    9,991.25x = 15,003.88 × 9,573.29
  4. Step 4: Simplify right side
    9,991.25x = 143,636,395.41
  5. Step 5: Solve for x
    x = 143,636,395.41/9,991.25
  6. Step 6: Final answer
    x = 14,376.23

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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.