Home / 20,507.33-30,761.85-10,640.27

Finding the Fourth Proportional to 20,507.33, 30,761.85 and 10,640.27

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Solution

The fourth proportional to 20,507.33, 30,761.85 and 10,640.27 is: 15,960.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.33 : 30,761.85 = 10,640.27 : x
  2. Step 2: Convert to fraction form
    20,507.33/30,761.85 = 10,640.27/x
  3. Step 3: Cross multiply
    20,507.33x = 30,761.85 × 10,640.27
  4. Step 4: Simplify right side
    20,507.33x = 327,314,389.70
  5. Step 5: Solve for x
    x = 327,314,389.70/20,507.33
  6. Step 6: Final answer
    x = 15,960.85

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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.