Home / 20,135.16-27,786-11,182.68

Finding the Fourth Proportional to 20,135.16, 27,786 and 11,182.68

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Solution

The fourth proportional to 20,135.16, 27,786 and 11,182.68 is: 15,431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.16 : 27,786 = 11,182.68 : x
  2. Step 2: Convert to fraction form
    20,135.16/27,786 = 11,182.68/x
  3. Step 3: Cross multiply
    20,135.16x = 27,786 × 11,182.68
  4. Step 4: Simplify right side
    20,135.16x = 310,721,946.48
  5. Step 5: Solve for x
    x = 310,721,946.48/20,135.16
  6. Step 6: Final answer
    x = 15,431.81

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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.