Home / 20,103.81-30,169.55-9,022.89

Finding the Fourth Proportional to 20,103.81, 30,169.55 and 9,022.89

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Solution

The fourth proportional to 20,103.81, 30,169.55 and 9,022.89 is: 13,540.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.81 : 30,169.55 = 9,022.89 : x
  2. Step 2: Convert to fraction form
    20,103.81/30,169.55 = 9,022.89/x
  3. Step 3: Cross multiply
    20,103.81x = 30,169.55 × 9,022.89
  4. Step 4: Simplify right side
    20,103.81x = 272,216,531.00
  5. Step 5: Solve for x
    x = 272,216,531.00/20,103.81
  6. Step 6: Final answer
    x = 13,540.54

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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.