Home / 20,305.72-30,462.18-7,165.72

Finding the Fourth Proportional to 20,305.72, 30,462.18 and 7,165.72

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Solution

The fourth proportional to 20,305.72, 30,462.18 and 7,165.72 is: 10,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.72 : 30,462.18 = 7,165.72 : x
  2. Step 2: Convert to fraction form
    20,305.72/30,462.18 = 7,165.72/x
  3. Step 3: Cross multiply
    20,305.72x = 30,462.18 × 7,165.72
  4. Step 4: Simplify right side
    20,305.72x = 218,283,452.47
  5. Step 5: Solve for x
    x = 218,283,452.47/20,305.72
  6. Step 6: Final answer
    x = 10,749.85

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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.