Home / 20,106.39-30,169.64-9,021

Finding the Fourth Proportional to 20,106.39, 30,169.64 and 9,021

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Solution

The fourth proportional to 20,106.39, 30,169.64 and 9,021 is: 13,536.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.39 : 30,169.64 = 9,021 : x
  2. Step 2: Convert to fraction form
    20,106.39/30,169.64 = 9,021/x
  3. Step 3: Cross multiply
    20,106.39x = 30,169.64 × 9,021
  4. Step 4: Simplify right side
    20,106.39x = 272,160,344.99
  5. Step 5: Solve for x
    x = 272,160,344.99/20,106.39
  6. Step 6: Final answer
    x = 13,536.01

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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.