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Finding the Fourth Proportional to 21,672.93, 32,508.92 and 9,986.15

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Solution

The fourth proportional to 21,672.93, 32,508.92 and 9,986.15 is: 14,979.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.93 : 32,508.92 = 9,986.15 : x
  2. Step 2: Convert to fraction form
    21,672.93/32,508.92 = 9,986.15/x
  3. Step 3: Cross multiply
    21,672.93x = 32,508.92 × 9,986.15
  4. Step 4: Simplify right side
    21,672.93x = 324,638,738.98
  5. Step 5: Solve for x
    x = 324,638,738.98/21,672.93
  6. Step 6: Final answer
    x = 14,979.00

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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.