Home / 19,939.62-27,529.80-15,394.08

Finding the Fourth Proportional to 19,939.62, 27,529.80 and 15,394.08

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Solution

The fourth proportional to 19,939.62, 27,529.80 and 15,394.08 is: 21,253.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.62 : 27,529.80 = 15,394.08 : x
  2. Step 2: Convert to fraction form
    19,939.62/27,529.80 = 15,394.08/x
  3. Step 3: Cross multiply
    19,939.62x = 27,529.80 × 15,394.08
  4. Step 4: Simplify right side
    19,939.62x = 423,795,943.58
  5. Step 5: Solve for x
    x = 423,795,943.58/19,939.62
  6. Step 6: Final answer
    x = 21,253.96

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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.