Home / 22,859.28-31,557.30-21,638.34

Finding the Fourth Proportional to 22,859.28, 31,557.30 and 21,638.34

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Solution

The fourth proportional to 22,859.28, 31,557.30 and 21,638.34 is: 29,871.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,859.28 : 31,557.30 = 21,638.34 : x
  2. Step 2: Convert to fraction form
    22,859.28/31,557.30 = 21,638.34/x
  3. Step 3: Cross multiply
    22,859.28x = 31,557.30 × 21,638.34
  4. Step 4: Simplify right side
    22,859.28x = 682,847,586.88
  5. Step 5: Solve for x
    x = 682,847,586.88/22,859.28
  6. Step 6: Final answer
    x = 29,871.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.