Home / 20,855.20-31,292.64-10,474.24

Finding the Fourth Proportional to 20,855.20, 31,292.64 and 10,474.24

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Solution

The fourth proportional to 20,855.20, 31,292.64 and 10,474.24 is: 15,716.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.20 : 31,292.64 = 10,474.24 : x
  2. Step 2: Convert to fraction form
    20,855.20/31,292.64 = 10,474.24/x
  3. Step 3: Cross multiply
    20,855.20x = 31,292.64 × 10,474.24
  4. Step 4: Simplify right side
    20,855.20x = 327,766,621.59
  5. Step 5: Solve for x
    x = 327,766,621.59/20,855.20
  6. Step 6: Final answer
    x = 15,716.30

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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.