Home / 20,268.46-30,405.74-7,118.52

Finding the Fourth Proportional to 20,268.46, 30,405.74 and 7,118.52

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Solution

The fourth proportional to 20,268.46, 30,405.74 and 7,118.52 is: 10,678.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.46 : 30,405.74 = 7,118.52 : x
  2. Step 2: Convert to fraction form
    20,268.46/30,405.74 = 7,118.52/x
  3. Step 3: Cross multiply
    20,268.46x = 30,405.74 × 7,118.52
  4. Step 4: Simplify right side
    20,268.46x = 216,443,868.30
  5. Step 5: Solve for x
    x = 216,443,868.30/20,268.46
  6. Step 6: Final answer
    x = 10,678.85

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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.