Home / 13,822.78-20,721.74-5,051.56

Finding the Fourth Proportional to 13,822.78, 20,721.74 and 5,051.56

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Solution

The fourth proportional to 13,822.78, 20,721.74 and 5,051.56 is: 7,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,822.78 : 20,721.74 = 5,051.56 : x
  2. Step 2: Convert to fraction form
    13,822.78/20,721.74 = 5,051.56/x
  3. Step 3: Cross multiply
    13,822.78x = 20,721.74 × 5,051.56
  4. Step 4: Simplify right side
    13,822.78x = 104,677,112.91
  5. Step 5: Solve for x
    x = 104,677,112.91/13,822.78
  6. Step 6: Final answer
    x = 7,572.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.