Home / 11,712.85-17,569.29-2,947.70

Finding the Fourth Proportional to 11,712.85, 17,569.29 and 2,947.70

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Solution

The fourth proportional to 11,712.85, 17,569.29 and 2,947.70 is: 4,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.85 : 17,569.29 = 2,947.70 : x
  2. Step 2: Convert to fraction form
    11,712.85/17,569.29 = 2,947.70/x
  3. Step 3: Cross multiply
    11,712.85x = 17,569.29 × 2,947.70
  4. Step 4: Simplify right side
    11,712.85x = 51,788,996.13
  5. Step 5: Solve for x
    x = 51,788,996.13/11,712.85
  6. Step 6: Final answer
    x = 4,421.55

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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.