Home / 20,744.75-31,118.92-8,899.07

Finding the Fourth Proportional to 20,744.75, 31,118.92 and 8,899.07

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Solution

The fourth proportional to 20,744.75, 31,118.92 and 8,899.07 is: 13,349.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.75 : 31,118.92 = 8,899.07 : x
  2. Step 2: Convert to fraction form
    20,744.75/31,118.92 = 8,899.07/x
  3. Step 3: Cross multiply
    20,744.75x = 31,118.92 × 8,899.07
  4. Step 4: Simplify right side
    20,744.75x = 276,929,269.56
  5. Step 5: Solve for x
    x = 276,929,269.56/20,744.75
  6. Step 6: Final answer
    x = 13,349.36

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1.5x scale

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.