Home / 20,797.36-31,191.18-10,256.56

Finding the Fourth Proportional to 20,797.36, 31,191.18 and 10,256.56

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Solution

The fourth proportional to 20,797.36, 31,191.18 and 10,256.56 is: 15,382.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.36 : 31,191.18 = 10,256.56 : x
  2. Step 2: Convert to fraction form
    20,797.36/31,191.18 = 10,256.56/x
  3. Step 3: Cross multiply
    20,797.36x = 31,191.18 × 10,256.56
  4. Step 4: Simplify right side
    20,797.36x = 319,914,209.14
  5. Step 5: Solve for x
    x = 319,914,209.14/20,797.36
  6. Step 6: Final answer
    x = 15,382.44

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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.