Home / 20,118.67-30,178.01-6,268.75

Finding the Fourth Proportional to 20,118.67, 30,178.01 and 6,268.75

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Solution

The fourth proportional to 20,118.67, 30,178.01 and 6,268.75 is: 9,403.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.67 : 30,178.01 = 6,268.75 : x
  2. Step 2: Convert to fraction form
    20,118.67/30,178.01 = 6,268.75/x
  3. Step 3: Cross multiply
    20,118.67x = 30,178.01 × 6,268.75
  4. Step 4: Simplify right side
    20,118.67x = 189,178,400.19
  5. Step 5: Solve for x
    x = 189,178,400.19/20,118.67
  6. Step 6: Final answer
    x = 9,403.13

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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.