Home / 13,479.25-18,612.83-8,451.89

Finding the Fourth Proportional to 13,479.25, 18,612.83 and 8,451.89

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Solution

The fourth proportional to 13,479.25, 18,612.83 and 8,451.89 is: 11,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.25 : 18,612.83 = 8,451.89 : x
  2. Step 2: Convert to fraction form
    13,479.25/18,612.83 = 8,451.89/x
  3. Step 3: Cross multiply
    13,479.25x = 18,612.83 × 8,451.89
  4. Step 4: Simplify right side
    13,479.25x = 157,313,591.75
  5. Step 5: Solve for x
    x = 157,313,591.75/13,479.25
  6. Step 6: Final answer
    x = 11,670.80

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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.