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Finding the Fourth Proportional to 15,966.72, 22,027.68 and 9,676.80

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Solution

The fourth proportional to 15,966.72, 22,027.68 and 9,676.80 is: 13,350.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,966.72 : 22,027.68 = 9,676.80 : x
  2. Step 2: Convert to fraction form
    15,966.72/22,027.68 = 9,676.80/x
  3. Step 3: Cross multiply
    15,966.72x = 22,027.68 × 9,676.80
  4. Step 4: Simplify right side
    15,966.72x = 213,157,453.82
  5. Step 5: Solve for x
    x = 213,157,453.82/15,966.72
  6. Step 6: Final answer
    x = 13,350.11

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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.