Home / 20,222.39-27,908.99-12,158.69

Finding the Fourth Proportional to 20,222.39, 27,908.99 and 12,158.69

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Solution

The fourth proportional to 20,222.39, 27,908.99 and 12,158.69 is: 16,780.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,222.39 : 27,908.99 = 12,158.69 : x
  2. Step 2: Convert to fraction form
    20,222.39/27,908.99 = 12,158.69/x
  3. Step 3: Cross multiply
    20,222.39x = 27,908.99 × 12,158.69
  4. Step 4: Simplify right side
    20,222.39x = 339,336,557.28
  5. Step 5: Solve for x
    x = 339,336,557.28/20,222.39
  6. Step 6: Final answer
    x = 16,780.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.