Home / 20,689.67-31,049.90-10,165.34

Finding the Fourth Proportional to 20,689.67, 31,049.90 and 10,165.34

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Solution

The fourth proportional to 20,689.67, 31,049.90 and 10,165.34 is: 15,255.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.67 : 31,049.90 = 10,165.34 : x
  2. Step 2: Convert to fraction form
    20,689.67/31,049.90 = 10,165.34/x
  3. Step 3: Cross multiply
    20,689.67x = 31,049.90 × 10,165.34
  4. Step 4: Simplify right side
    20,689.67x = 315,632,584.39
  5. Step 5: Solve for x
    x = 315,632,584.39/20,689.67
  6. Step 6: Final answer
    x = 15,255.57

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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.