Home / 12,483.28-18,709.20-10,919.56

Finding the Fourth Proportional to 12,483.28, 18,709.20 and 10,919.56

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Solution

The fourth proportional to 12,483.28, 18,709.20 and 10,919.56 is: 16,365.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.28 : 18,709.20 = 10,919.56 : x
  2. Step 2: Convert to fraction form
    12,483.28/18,709.20 = 10,919.56/x
  3. Step 3: Cross multiply
    12,483.28x = 18,709.20 × 10,919.56
  4. Step 4: Simplify right side
    12,483.28x = 204,296,231.95
  5. Step 5: Solve for x
    x = 204,296,231.95/12,483.28
  6. Step 6: Final answer
    x = 16,365.59

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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.