Home / 20,904.19-31,359.44-6,111.25

Finding the Fourth Proportional to 20,904.19, 31,359.44 and 6,111.25

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Solution

The fourth proportional to 20,904.19, 31,359.44 and 6,111.25 is: 9,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.19 : 31,359.44 = 6,111.25 : x
  2. Step 2: Convert to fraction form
    20,904.19/31,359.44 = 6,111.25/x
  3. Step 3: Cross multiply
    20,904.19x = 31,359.44 × 6,111.25
  4. Step 4: Simplify right side
    20,904.19x = 191,645,377.70
  5. Step 5: Solve for x
    x = 191,645,377.70/20,904.19
  6. Step 6: Final answer
    x = 9,167.80

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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.