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Finding the Fourth Proportional to 11,720.66, 17,561.54 and 8,250.62

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Solution

The fourth proportional to 11,720.66, 17,561.54 and 8,250.62 is: 12,362.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.66 : 17,561.54 = 8,250.62 : x
  2. Step 2: Convert to fraction form
    11,720.66/17,561.54 = 8,250.62/x
  3. Step 3: Cross multiply
    11,720.66x = 17,561.54 × 8,250.62
  4. Step 4: Simplify right side
    11,720.66x = 144,893,593.15
  5. Step 5: Solve for x
    x = 144,893,593.15/11,720.66
  6. Step 6: Final answer
    x = 12,362.24

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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.