Home / 20,908.23-31,363.29-6,118.41

Finding the Fourth Proportional to 20,908.23, 31,363.29 and 6,118.41

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Solution

The fourth proportional to 20,908.23, 31,363.29 and 6,118.41 is: 9,177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.23 : 31,363.29 = 6,118.41 : x
  2. Step 2: Convert to fraction form
    20,908.23/31,363.29 = 6,118.41/x
  3. Step 3: Cross multiply
    20,908.23x = 31,363.29 × 6,118.41
  4. Step 4: Simplify right side
    20,908.23x = 191,893,467.17
  5. Step 5: Solve for x
    x = 191,893,467.17/20,908.23
  6. Step 6: Final answer
    x = 9,177.89

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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.