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Finding the Fourth Proportional to 11,869.71, 17,798.99 and 6,940.86

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Solution

The fourth proportional to 11,869.71, 17,798.99 and 6,940.86 is: 10,408.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.71 : 17,798.99 = 6,940.86 : x
  2. Step 2: Convert to fraction form
    11,869.71/17,798.99 = 6,940.86/x
  3. Step 3: Cross multiply
    11,869.71x = 17,798.99 × 6,940.86
  4. Step 4: Simplify right side
    11,869.71x = 123,540,263.03
  5. Step 5: Solve for x
    x = 123,540,263.03/11,869.71
  6. Step 6: Final answer
    x = 10,408.03

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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.