Home / 21,156.25-31,734.38-10,775.29

Finding the Fourth Proportional to 21,156.25, 31,734.38 and 10,775.29

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Solution

The fourth proportional to 21,156.25, 31,734.38 and 10,775.29 is: 16,162.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.25 : 31,734.38 = 10,775.29 : x
  2. Step 2: Convert to fraction form
    21,156.25/31,734.38 = 10,775.29/x
  3. Step 3: Cross multiply
    21,156.25x = 31,734.38 × 10,775.29
  4. Step 4: Simplify right side
    21,156.25x = 341,947,014.26
  5. Step 5: Solve for x
    x = 341,947,014.26/21,156.25
  6. Step 6: Final answer
    x = 16,162.93

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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.