Home / 21,974.80-30,330.96-13,586.56

Finding the Fourth Proportional to 21,974.80, 30,330.96 and 13,586.56

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Solution

The fourth proportional to 21,974.80, 30,330.96 and 13,586.56 is: 18,753.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,974.80 : 30,330.96 = 13,586.56 : x
  2. Step 2: Convert to fraction form
    21,974.80/30,330.96 = 13,586.56/x
  3. Step 3: Cross multiply
    21,974.80x = 30,330.96 × 13,586.56
  4. Step 4: Simplify right side
    21,974.80x = 412,093,407.90
  5. Step 5: Solve for x
    x = 412,093,407.90/21,974.80
  6. Step 6: Final answer
    x = 18,753.00

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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.