Home / 20,112.39-30,169.40-9,576.99

Finding the Fourth Proportional to 20,112.39, 30,169.40 and 9,576.99

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Solution

The fourth proportional to 20,112.39, 30,169.40 and 9,576.99 is: 14,365.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.39 : 30,169.40 = 9,576.99 : x
  2. Step 2: Convert to fraction form
    20,112.39/30,169.40 = 9,576.99/x
  3. Step 3: Cross multiply
    20,112.39x = 30,169.40 × 9,576.99
  4. Step 4: Simplify right side
    20,112.39x = 288,931,994.22
  5. Step 5: Solve for x
    x = 288,931,994.22/20,112.39
  6. Step 6: Final answer
    x = 14,365.87

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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.