Home / 20,089.50-27,722.75-11,137.16

Finding the Fourth Proportional to 20,089.50, 27,722.75 and 11,137.16

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Solution

The fourth proportional to 20,089.50, 27,722.75 and 11,137.16 is: 15,368.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.50 : 27,722.75 = 11,137.16 : x
  2. Step 2: Convert to fraction form
    20,089.50/27,722.75 = 11,137.16/x
  3. Step 3: Cross multiply
    20,089.50x = 27,722.75 × 11,137.16
  4. Step 4: Simplify right side
    20,089.50x = 308,752,508.09
  5. Step 5: Solve for x
    x = 308,752,508.09/20,089.50
  6. Step 6: Final answer
    x = 15,368.85

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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.