Home / 20,962.48-31,437.03-6,919.90

Finding the Fourth Proportional to 20,962.48, 31,437.03 and 6,919.90

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Solution

The fourth proportional to 20,962.48, 31,437.03 and 6,919.90 is: 10,377.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.48 : 31,437.03 = 6,919.90 : x
  2. Step 2: Convert to fraction form
    20,962.48/31,437.03 = 6,919.90/x
  3. Step 3: Cross multiply
    20,962.48x = 31,437.03 × 6,919.90
  4. Step 4: Simplify right side
    20,962.48x = 217,541,103.90
  5. Step 5: Solve for x
    x = 217,541,103.90/20,962.48
  6. Step 6: Final answer
    x = 10,377.64

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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.