Home / 20,670.23-31,005.33-5,087.85

Finding the Fourth Proportional to 20,670.23, 31,005.33 and 5,087.85

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Solution

The fourth proportional to 20,670.23, 31,005.33 and 5,087.85 is: 7,631.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.23 : 31,005.33 = 5,087.85 : x
  2. Step 2: Convert to fraction form
    20,670.23/31,005.33 = 5,087.85/x
  3. Step 3: Cross multiply
    20,670.23x = 31,005.33 × 5,087.85
  4. Step 4: Simplify right side
    20,670.23x = 157,750,468.24
  5. Step 5: Solve for x
    x = 157,750,468.24/20,670.23
  6. Step 6: Final answer
    x = 7,631.77

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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.