Home / 20,764.89-31,152.26-6,724.91

Finding the Fourth Proportional to 20,764.89, 31,152.26 and 6,724.91

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Solution

The fourth proportional to 20,764.89, 31,152.26 and 6,724.91 is: 10,088.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.89 : 31,152.26 = 6,724.91 : x
  2. Step 2: Convert to fraction form
    20,764.89/31,152.26 = 6,724.91/x
  3. Step 3: Cross multiply
    20,764.89x = 31,152.26 × 6,724.91
  4. Step 4: Simplify right side
    20,764.89x = 209,496,239.49
  5. Step 5: Solve for x
    x = 209,496,239.49/20,764.89
  6. Step 6: Final answer
    x = 10,088.96

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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.