Home / 14,578.11-20,118.78-8,290.89

Finding the Fourth Proportional to 14,578.11, 20,118.78 and 8,290.89

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Solution

The fourth proportional to 14,578.11, 20,118.78 and 8,290.89 is: 11,441.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,578.11 : 20,118.78 = 8,290.89 : x
  2. Step 2: Convert to fraction form
    14,578.11/20,118.78 = 8,290.89/x
  3. Step 3: Cross multiply
    14,578.11x = 20,118.78 × 8,290.89
  4. Step 4: Simplify right side
    14,578.11x = 166,802,591.91
  5. Step 5: Solve for x
    x = 166,802,591.91/14,578.11
  6. Step 6: Final answer
    x = 11,441.99

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Double scale
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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.