Home / 20,135.46-30,201.39-9,039.18

Finding the Fourth Proportional to 20,135.46, 30,201.39 and 9,039.18

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Solution

The fourth proportional to 20,135.46, 30,201.39 and 9,039.18 is: 13,557.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.46 : 30,201.39 = 9,039.18 : x
  2. Step 2: Convert to fraction form
    20,135.46/30,201.39 = 9,039.18/x
  3. Step 3: Cross multiply
    20,135.46x = 30,201.39 × 9,039.18
  4. Step 4: Simplify right side
    20,135.46x = 272,995,800.46
  5. Step 5: Solve for x
    x = 272,995,800.46/20,135.46
  6. Step 6: Final answer
    x = 13,557.96

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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.