Home / 20,099.09-30,002.25-18,616.79

Finding the Fourth Proportional to 20,099.09, 30,002.25 and 18,616.79

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Solution

The fourth proportional to 20,099.09, 30,002.25 and 18,616.79 is: 27,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.09 : 30,002.25 = 18,616.79 : x
  2. Step 2: Convert to fraction form
    20,099.09/30,002.25 = 18,616.79/x
  3. Step 3: Cross multiply
    20,099.09x = 30,002.25 × 18,616.79
  4. Step 4: Simplify right side
    20,099.09x = 558,545,437.77
  5. Step 5: Solve for x
    x = 558,545,437.77/20,099.09
  6. Step 6: Final answer
    x = 27,789.60

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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.