Home / 20,292.10-30,426.27-7,142.02

Finding the Fourth Proportional to 20,292.10, 30,426.27 and 7,142.02

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Solution

The fourth proportional to 20,292.10, 30,426.27 and 7,142.02 is: 10,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.10 : 30,426.27 = 7,142.02 : x
  2. Step 2: Convert to fraction form
    20,292.10/30,426.27 = 7,142.02/x
  3. Step 3: Cross multiply
    20,292.10x = 30,426.27 × 7,142.02
  4. Step 4: Simplify right side
    20,292.10x = 217,305,028.87
  5. Step 5: Solve for x
    x = 217,305,028.87/20,292.10
  6. Step 6: Final answer
    x = 10,708.85

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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.