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Finding the Fourth Proportional to 17,876.74, 24,671.31 and 9,920.51

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Solution

The fourth proportional to 17,876.74, 24,671.31 and 9,920.51 is: 13,691.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,876.74 : 24,671.31 = 9,920.51 : x
  2. Step 2: Convert to fraction form
    17,876.74/24,671.31 = 9,920.51/x
  3. Step 3: Cross multiply
    17,876.74x = 24,671.31 × 9,920.51
  4. Step 4: Simplify right side
    17,876.74x = 244,751,977.57
  5. Step 5: Solve for x
    x = 244,751,977.57/17,876.74
  6. Step 6: Final answer
    x = 13,691.09

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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.