Home / 12,931.17-19,399.20-4,163.73

Finding the Fourth Proportional to 12,931.17, 19,399.20 and 4,163.73

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Solution

The fourth proportional to 12,931.17, 19,399.20 and 4,163.73 is: 6,246.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.17 : 19,399.20 = 4,163.73 : x
  2. Step 2: Convert to fraction form
    12,931.17/19,399.20 = 4,163.73/x
  3. Step 3: Cross multiply
    12,931.17x = 19,399.20 × 4,163.73
  4. Step 4: Simplify right side
    12,931.17x = 80,773,031.02
  5. Step 5: Solve for x
    x = 80,773,031.02/12,931.17
  6. Step 6: Final answer
    x = 6,246.38

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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.