Home / 20,147.05-27,802.92-11,072.35

Finding the Fourth Proportional to 20,147.05, 27,802.92 and 11,072.35

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Solution

The fourth proportional to 20,147.05, 27,802.92 and 11,072.35 is: 15,279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.05 : 27,802.92 = 11,072.35 : x
  2. Step 2: Convert to fraction form
    20,147.05/27,802.92 = 11,072.35/x
  3. Step 3: Cross multiply
    20,147.05x = 27,802.92 × 11,072.35
  4. Step 4: Simplify right side
    20,147.05x = 307,843,661.26
  5. Step 5: Solve for x
    x = 307,843,661.26/20,147.05
  6. Step 6: Final answer
    x = 15,279.84

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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.