Home / 20,180.88-27,864-15,495.84

Finding the Fourth Proportional to 20,180.88, 27,864 and 15,495.84

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Solution

The fourth proportional to 20,180.88, 27,864 and 15,495.84 is: 21,395.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.88 : 27,864 = 15,495.84 : x
  2. Step 2: Convert to fraction form
    20,180.88/27,864 = 15,495.84/x
  3. Step 3: Cross multiply
    20,180.88x = 27,864 × 15,495.84
  4. Step 4: Simplify right side
    20,180.88x = 431,776,085.76
  5. Step 5: Solve for x
    x = 431,776,085.76/20,180.88
  6. Step 6: Final answer
    x = 21,395.31

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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.