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Finding the Fourth Proportional to 14,991.78, 22,431.18 and 8,965.54

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Solution

The fourth proportional to 14,991.78, 22,431.18 and 8,965.54 is: 13,414.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991.78 : 22,431.18 = 8,965.54 : x
  2. Step 2: Convert to fraction form
    14,991.78/22,431.18 = 8,965.54/x
  3. Step 3: Cross multiply
    14,991.78x = 22,431.18 × 8,965.54
  4. Step 4: Simplify right side
    14,991.78x = 201,107,526.59
  5. Step 5: Solve for x
    x = 201,107,526.59/14,991.78
  6. Step 6: Final answer
    x = 13,414.52

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1.5x scale

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.