Home / 14,786.39-20,402.69-8,815.88

Finding the Fourth Proportional to 14,786.39, 20,402.69 and 8,815.88

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Solution

The fourth proportional to 14,786.39, 20,402.69 and 8,815.88 is: 12,164.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,786.39 : 20,402.69 = 8,815.88 : x
  2. Step 2: Convert to fraction form
    14,786.39/20,402.69 = 8,815.88/x
  3. Step 3: Cross multiply
    14,786.39x = 20,402.69 × 8,815.88
  4. Step 4: Simplify right side
    14,786.39x = 179,867,673.64
  5. Step 5: Solve for x
    x = 179,867,673.64/14,786.39
  6. Step 6: Final answer
    x = 12,164.41

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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.