Home / 20,519.45-28,316.79-11,088

Finding the Fourth Proportional to 20,519.45, 28,316.79 and 11,088

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Solution

The fourth proportional to 20,519.45, 28,316.79 and 11,088 is: 15,301.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.45 : 28,316.79 = 11,088 : x
  2. Step 2: Convert to fraction form
    20,519.45/28,316.79 = 11,088/x
  3. Step 3: Cross multiply
    20,519.45x = 28,316.79 × 11,088
  4. Step 4: Simplify right side
    20,519.45x = 313,976,567.52
  5. Step 5: Solve for x
    x = 313,976,567.52/20,519.45
  6. Step 6: Final answer
    x = 15,301.42

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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.