Home / 20,235.12-30,349.26-5,442.81

Finding the Fourth Proportional to 20,235.12, 30,349.26 and 5,442.81

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Solution

The fourth proportional to 20,235.12, 30,349.26 and 5,442.81 is: 8,163.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.12 : 30,349.26 = 5,442.81 : x
  2. Step 2: Convert to fraction form
    20,235.12/30,349.26 = 5,442.81/x
  3. Step 3: Cross multiply
    20,235.12x = 30,349.26 × 5,442.81
  4. Step 4: Simplify right side
    20,235.12x = 165,185,255.82
  5. Step 5: Solve for x
    x = 165,185,255.82/20,235.12
  6. Step 6: Final answer
    x = 8,163.30

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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.