Home / 21,914.56-32,839.26-13,139.20

Finding the Fourth Proportional to 21,914.56, 32,839.26 and 13,139.20

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Solution

The fourth proportional to 21,914.56, 32,839.26 and 13,139.20 is: 19,689.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,914.56 : 32,839.26 = 13,139.20 : x
  2. Step 2: Convert to fraction form
    21,914.56/32,839.26 = 13,139.20/x
  3. Step 3: Cross multiply
    21,914.56x = 32,839.26 × 13,139.20
  4. Step 4: Simplify right side
    21,914.56x = 431,481,604.99
  5. Step 5: Solve for x
    x = 431,481,604.99/21,914.56
  6. Step 6: Final answer
    x = 19,689.27

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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.