Home / 13,550.92-20,320.62-8,355.40

Finding the Fourth Proportional to 13,550.92, 20,320.62 and 8,355.40

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Solution

The fourth proportional to 13,550.92, 20,320.62 and 8,355.40 is: 12,529.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.92 : 20,320.62 = 8,355.40 : x
  2. Step 2: Convert to fraction form
    13,550.92/20,320.62 = 8,355.40/x
  3. Step 3: Cross multiply
    13,550.92x = 20,320.62 × 8,355.40
  4. Step 4: Simplify right side
    13,550.92x = 169,786,908.35
  5. Step 5: Solve for x
    x = 169,786,908.35/13,550.92
  6. Step 6: Final answer
    x = 12,529.55

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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.