Home / 21,813.31-32,734.29-11,959.57

Finding the Fourth Proportional to 21,813.31, 32,734.29 and 11,959.57

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Solution

The fourth proportional to 21,813.31, 32,734.29 and 11,959.57 is: 17,947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,813.31 : 32,734.29 = 11,959.57 : x
  2. Step 2: Convert to fraction form
    21,813.31/32,734.29 = 11,959.57/x
  3. Step 3: Cross multiply
    21,813.31x = 32,734.29 × 11,959.57
  4. Step 4: Simplify right side
    21,813.31x = 391,488,032.66
  5. Step 5: Solve for x
    x = 391,488,032.66/21,813.31
  6. Step 6: Final answer
    x = 17,947.21

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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.