Home / 20,971.18-31,451.73-6,176.08

Finding the Fourth Proportional to 20,971.18, 31,451.73 and 6,176.08

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Solution

The fourth proportional to 20,971.18, 31,451.73 and 6,176.08 is: 9,262.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.18 : 31,451.73 = 6,176.08 : x
  2. Step 2: Convert to fraction form
    20,971.18/31,451.73 = 6,176.08/x
  3. Step 3: Cross multiply
    20,971.18x = 31,451.73 × 6,176.08
  4. Step 4: Simplify right side
    20,971.18x = 194,248,400.62
  5. Step 5: Solve for x
    x = 194,248,400.62/20,971.18
  6. Step 6: Final answer
    x = 9,262.64

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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.