Home / 20,268.96-30,406.49-7,119.02

Finding the Fourth Proportional to 20,268.96, 30,406.49 and 7,119.02

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Solution

The fourth proportional to 20,268.96, 30,406.49 and 7,119.02 is: 10,679.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.96 : 30,406.49 = 7,119.02 : x
  2. Step 2: Convert to fraction form
    20,268.96/30,406.49 = 7,119.02/x
  3. Step 3: Cross multiply
    20,268.96x = 30,406.49 × 7,119.02
  4. Step 4: Simplify right side
    20,268.96x = 216,464,222.81
  5. Step 5: Solve for x
    x = 216,464,222.81/20,268.96
  6. Step 6: Final answer
    x = 10,679.59

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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.