Home / 13,516.05-20,170.80-12,039.83

Finding the Fourth Proportional to 13,516.05, 20,170.80 and 12,039.83

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Solution

The fourth proportional to 13,516.05, 20,170.80 and 12,039.83 is: 17,967.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.05 : 20,170.80 = 12,039.83 : x
  2. Step 2: Convert to fraction form
    13,516.05/20,170.80 = 12,039.83/x
  3. Step 3: Cross multiply
    13,516.05x = 20,170.80 × 12,039.83
  4. Step 4: Simplify right side
    13,516.05x = 242,853,002.96
  5. Step 5: Solve for x
    x = 242,853,002.96/13,516.05
  6. Step 6: Final answer
    x = 17,967.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.