Home / 13,823.79-20,705.28-11,424.68

Finding the Fourth Proportional to 13,823.79, 20,705.28 and 11,424.68

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Solution

The fourth proportional to 13,823.79, 20,705.28 and 11,424.68 is: 17,111.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.79 : 20,705.28 = 11,424.68 : x
  2. Step 2: Convert to fraction form
    13,823.79/20,705.28 = 11,424.68/x
  3. Step 3: Cross multiply
    13,823.79x = 20,705.28 × 11,424.68
  4. Step 4: Simplify right side
    13,823.79x = 236,551,198.31
  5. Step 5: Solve for x
    x = 236,551,198.31/13,823.79
  6. Step 6: Final answer
    x = 17,111.89

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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.