Home / 13,691.77-18,890.01-11,169.53

Finding the Fourth Proportional to 13,691.77, 18,890.01 and 11,169.53

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Solution

The fourth proportional to 13,691.77, 18,890.01 and 11,169.53 is: 15,410.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.77 : 18,890.01 = 11,169.53 : x
  2. Step 2: Convert to fraction form
    13,691.77/18,890.01 = 11,169.53/x
  3. Step 3: Cross multiply
    13,691.77x = 18,890.01 × 11,169.53
  4. Step 4: Simplify right side
    13,691.77x = 210,992,509.78
  5. Step 5: Solve for x
    x = 210,992,509.78/13,691.77
  6. Step 6: Final answer
    x = 15,410.17

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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.