Home / 20,277.96-30,399.31-9,742.69

Finding the Fourth Proportional to 20,277.96, 30,399.31 and 9,742.69

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Solution

The fourth proportional to 20,277.96, 30,399.31 and 9,742.69 is: 14,605.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.96 : 30,399.31 = 9,742.69 : x
  2. Step 2: Convert to fraction form
    20,277.96/30,399.31 = 9,742.69/x
  3. Step 3: Cross multiply
    20,277.96x = 30,399.31 × 9,742.69
  4. Step 4: Simplify right side
    20,277.96x = 296,171,103.72
  5. Step 5: Solve for x
    x = 296,171,103.72/20,277.96
  6. Step 6: Final answer
    x = 14,605.57

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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.