Home / 20,112.53-30,143.27-9,018.77

Finding the Fourth Proportional to 20,112.53, 30,143.27 and 9,018.77

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Solution

The fourth proportional to 20,112.53, 30,143.27 and 9,018.77 is: 13,516.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.53 : 30,143.27 = 9,018.77 : x
  2. Step 2: Convert to fraction form
    20,112.53/30,143.27 = 9,018.77/x
  3. Step 3: Cross multiply
    20,112.53x = 30,143.27 × 9,018.77
  4. Step 4: Simplify right side
    20,112.53x = 271,855,091.01
  5. Step 5: Solve for x
    x = 271,855,091.01/20,112.53
  6. Step 6: Final answer
    x = 13,516.71

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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.