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Finding the Fourth Proportional to 17,877.74, 24,672.69 and 9,921.51

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Solution

The fourth proportional to 17,877.74, 24,672.69 and 9,921.51 is: 13,692.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,877.74 : 24,672.69 = 9,921.51 : x
  2. Step 2: Convert to fraction form
    17,877.74/24,672.69 = 9,921.51/x
  3. Step 3: Cross multiply
    17,877.74x = 24,672.69 × 9,921.51
  4. Step 4: Simplify right side
    17,877.74x = 244,790,340.56
  5. Step 5: Solve for x
    x = 244,790,340.56/17,877.74
  6. Step 6: Final answer
    x = 13,692.47

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1.5x scale

Why These Related Problems?

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