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Finding the Fourth Proportional to 9,887.91, 13,645.32 and 7,372.23

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Solution

The fourth proportional to 9,887.91, 13,645.32 and 7,372.23 is: 10,173.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,887.91 : 13,645.32 = 7,372.23 : x
  2. Step 2: Convert to fraction form
    9,887.91/13,645.32 = 7,372.23/x
  3. Step 3: Cross multiply
    9,887.91x = 13,645.32 × 7,372.23
  4. Step 4: Simplify right side
    9,887.91x = 100,596,437.46
  5. Step 5: Solve for x
    x = 100,596,437.46/9,887.91
  6. Step 6: Final answer
    x = 10,173.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.