Home / 20,127.24-30,134.88-10,245.24

Finding the Fourth Proportional to 20,127.24, 30,134.88 and 10,245.24

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Solution

The fourth proportional to 20,127.24, 30,134.88 and 10,245.24 is: 15,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.24 : 30,134.88 = 10,245.24 : x
  2. Step 2: Convert to fraction form
    20,127.24/30,134.88 = 10,245.24/x
  3. Step 3: Cross multiply
    20,127.24x = 30,134.88 × 10,245.24
  4. Step 4: Simplify right side
    20,127.24x = 308,739,077.97
  5. Step 5: Solve for x
    x = 308,739,077.97/20,127.24
  6. Step 6: Final answer
    x = 15,339.36

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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.