Home / 20,927.52-31,386.42-7,786.08

Finding the Fourth Proportional to 20,927.52, 31,386.42 and 7,786.08

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Solution

The fourth proportional to 20,927.52, 31,386.42 and 7,786.08 is: 11,677.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.52 : 31,386.42 = 7,786.08 : x
  2. Step 2: Convert to fraction form
    20,927.52/31,386.42 = 7,786.08/x
  3. Step 3: Cross multiply
    20,927.52x = 31,386.42 × 7,786.08
  4. Step 4: Simplify right side
    20,927.52x = 244,377,177.03
  5. Step 5: Solve for x
    x = 244,377,177.03/20,927.52
  6. Step 6: Final answer
    x = 11,677.31

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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.