Home / 11,112.12-16,666.36-5,189.61

Finding the Fourth Proportional to 11,112.12, 16,666.36 and 5,189.61

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Solution

The fourth proportional to 11,112.12, 16,666.36 and 5,189.61 is: 7,783.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.12 : 16,666.36 = 5,189.61 : x
  2. Step 2: Convert to fraction form
    11,112.12/16,666.36 = 5,189.61/x
  3. Step 3: Cross multiply
    11,112.12x = 16,666.36 × 5,189.61
  4. Step 4: Simplify right side
    11,112.12x = 86,491,937.21
  5. Step 5: Solve for x
    x = 86,491,937.21/11,112.12
  6. Step 6: Final answer
    x = 7,783.57

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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.