Home / 18,921.46-28,372.47-10,163.74

Finding the Fourth Proportional to 18,921.46, 28,372.47 and 10,163.74

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Solution

The fourth proportional to 18,921.46, 28,372.47 and 10,163.74 is: 15,240.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.46 : 28,372.47 = 10,163.74 : x
  2. Step 2: Convert to fraction form
    18,921.46/28,372.47 = 10,163.74/x
  3. Step 3: Cross multiply
    18,921.46x = 28,372.47 × 10,163.74
  4. Step 4: Simplify right side
    18,921.46x = 288,370,408.24
  5. Step 5: Solve for x
    x = 288,370,408.24/18,921.46
  6. Step 6: Final answer
    x = 15,240.39

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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.