Home / 13,629.29-20,342.82-11,747.12

Finding the Fourth Proportional to 13,629.29, 20,342.82 and 11,747.12

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Solution

The fourth proportional to 13,629.29, 20,342.82 and 11,747.12 is: 17,533.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.29 : 20,342.82 = 11,747.12 : x
  2. Step 2: Convert to fraction form
    13,629.29/20,342.82 = 11,747.12/x
  3. Step 3: Cross multiply
    13,629.29x = 20,342.82 × 11,747.12
  4. Step 4: Simplify right side
    13,629.29x = 238,969,488.94
  5. Step 5: Solve for x
    x = 238,969,488.94/13,629.29
  6. Step 6: Final answer
    x = 17,533.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.