Home / 13,784.45-19,025.66-8,408.70

Finding the Fourth Proportional to 13,784.45, 19,025.66 and 8,408.70

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Solution

The fourth proportional to 13,784.45, 19,025.66 and 8,408.70 is: 11,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.45 : 19,025.66 = 8,408.70 : x
  2. Step 2: Convert to fraction form
    13,784.45/19,025.66 = 8,408.70/x
  3. Step 3: Cross multiply
    13,784.45x = 19,025.66 × 8,408.70
  4. Step 4: Simplify right side
    13,784.45x = 159,981,025.20
  5. Step 5: Solve for x
    x = 159,981,025.20/13,784.45
  6. Step 6: Final answer
    x = 11,605.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.