Home / 20,754.75-31,153.31-15,191.57

Finding the Fourth Proportional to 20,754.75, 31,153.31 and 15,191.57

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Solution

The fourth proportional to 20,754.75, 31,153.31 and 15,191.57 is: 22,802.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.75 : 31,153.31 = 15,191.57 : x
  2. Step 2: Convert to fraction form
    20,754.75/31,153.31 = 15,191.57/x
  3. Step 3: Cross multiply
    20,754.75x = 31,153.31 × 15,191.57
  4. Step 4: Simplify right side
    20,754.75x = 473,267,573.25
  5. Step 5: Solve for x
    x = 473,267,573.25/20,754.75
  6. Step 6: Final answer
    x = 22,802.86

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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.