Home / 13,636.69-18,818.86-8,920.97

Finding the Fourth Proportional to 13,636.69, 18,818.86 and 8,920.97

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Solution

The fourth proportional to 13,636.69, 18,818.86 and 8,920.97 is: 12,311.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.69 : 18,818.86 = 8,920.97 : x
  2. Step 2: Convert to fraction form
    13,636.69/18,818.86 = 8,920.97/x
  3. Step 3: Cross multiply
    13,636.69x = 18,818.86 × 8,920.97
  4. Step 4: Simplify right side
    13,636.69x = 167,882,456.40
  5. Step 5: Solve for x
    x = 167,882,456.40/13,636.69
  6. Step 6: Final answer
    x = 12,311.09

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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.