Home / 20,189.12-30,293.64-9,103.52

Finding the Fourth Proportional to 20,189.12, 30,293.64 and 9,103.52

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Solution

The fourth proportional to 20,189.12, 30,293.64 and 9,103.52 is: 13,659.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.12 : 30,293.64 = 9,103.52 : x
  2. Step 2: Convert to fraction form
    20,189.12/30,293.64 = 9,103.52/x
  3. Step 3: Cross multiply
    20,189.12x = 30,293.64 × 9,103.52
  4. Step 4: Simplify right side
    20,189.12x = 275,778,757.61
  5. Step 5: Solve for x
    x = 275,778,757.61/20,189.12
  6. Step 6: Final answer
    x = 13,659.77

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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.