Home / 22,742.33-31,157.11-21,890.08

Finding the Fourth Proportional to 22,742.33, 31,157.11 and 21,890.08

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Solution

The fourth proportional to 22,742.33, 31,157.11 and 21,890.08 is: 29,989.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,742.33 : 31,157.11 = 21,890.08 : x
  2. Step 2: Convert to fraction form
    22,742.33/31,157.11 = 21,890.08/x
  3. Step 3: Cross multiply
    22,742.33x = 31,157.11 × 21,890.08
  4. Step 4: Simplify right side
    22,742.33x = 682,031,497.85
  5. Step 5: Solve for x
    x = 682,031,497.85/22,742.33
  6. Step 6: Final answer
    x = 29,989.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.