Home / 20,277.30-30,392.19-9,171.06

Finding the Fourth Proportional to 20,277.30, 30,392.19 and 9,171.06

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Solution

The fourth proportional to 20,277.30, 30,392.19 and 9,171.06 is: 13,745.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.30 : 30,392.19 = 9,171.06 : x
  2. Step 2: Convert to fraction form
    20,277.30/30,392.19 = 9,171.06/x
  3. Step 3: Cross multiply
    20,277.30x = 30,392.19 × 9,171.06
  4. Step 4: Simplify right side
    20,277.30x = 278,728,598.02
  5. Step 5: Solve for x
    x = 278,728,598.02/20,277.30
  6. Step 6: Final answer
    x = 13,745.84

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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.