Home / 20,216.56-30,305.40-10,360.48

Finding the Fourth Proportional to 20,216.56, 30,305.40 and 10,360.48

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Solution

The fourth proportional to 20,216.56, 30,305.40 and 10,360.48 is: 15,530.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.56 : 30,305.40 = 10,360.48 : x
  2. Step 2: Convert to fraction form
    20,216.56/30,305.40 = 10,360.48/x
  3. Step 3: Cross multiply
    20,216.56x = 30,305.40 × 10,360.48
  4. Step 4: Simplify right side
    20,216.56x = 313,978,490.59
  5. Step 5: Solve for x
    x = 313,978,490.59/20,216.56
  6. Step 6: Final answer
    x = 15,530.76

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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.