Home / 19,631.78-29,436.47-13,399.33

Finding the Fourth Proportional to 19,631.78, 29,436.47 and 13,399.33

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Solution

The fourth proportional to 19,631.78, 29,436.47 and 13,399.33 is: 20,091.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,631.78 : 29,436.47 = 13,399.33 : x
  2. Step 2: Convert to fraction form
    19,631.78/29,436.47 = 13,399.33/x
  3. Step 3: Cross multiply
    19,631.78x = 29,436.47 × 13,399.33
  4. Step 4: Simplify right side
    19,631.78x = 394,429,098.58
  5. Step 5: Solve for x
    x = 394,429,098.58/19,631.78
  6. Step 6: Final answer
    x = 20,091.36

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1.5x scale

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.