Home / 13,979.70-19,272.19-9,993.89

Finding the Fourth Proportional to 13,979.70, 19,272.19 and 9,993.89

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Solution

The fourth proportional to 13,979.70, 19,272.19 and 9,993.89 is: 13,777.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.70 : 19,272.19 = 9,993.89 : x
  2. Step 2: Convert to fraction form
    13,979.70/19,272.19 = 9,993.89/x
  3. Step 3: Cross multiply
    13,979.70x = 19,272.19 × 9,993.89
  4. Step 4: Simplify right side
    13,979.70x = 192,604,146.92
  5. Step 5: Solve for x
    x = 192,604,146.92/13,979.70
  6. Step 6: Final answer
    x = 13,777.42

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Double scale
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1.5x scale

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.