Home / 19,280.28-28,879.94-12,256.76

Finding the Fourth Proportional to 19,280.28, 28,879.94 and 12,256.76

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Solution

The fourth proportional to 19,280.28, 28,879.94 and 12,256.76 is: 18,359.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,280.28 : 28,879.94 = 12,256.76 : x
  2. Step 2: Convert to fraction form
    19,280.28/28,879.94 = 12,256.76/x
  3. Step 3: Cross multiply
    19,280.28x = 28,879.94 × 12,256.76
  4. Step 4: Simplify right side
    19,280.28x = 353,974,493.39
  5. Step 5: Solve for x
    x = 353,974,493.39/19,280.28
  6. Step 6: Final answer
    x = 18,359.41

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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.