Home / 10,665.12-14,716.08-6,189.60

Finding the Fourth Proportional to 10,665.12, 14,716.08 and 6,189.60

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Solution

The fourth proportional to 10,665.12, 14,716.08 and 6,189.60 is: 8,540.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,665.12 : 14,716.08 = 6,189.60 : x
  2. Step 2: Convert to fraction form
    10,665.12/14,716.08 = 6,189.60/x
  3. Step 3: Cross multiply
    10,665.12x = 14,716.08 × 6,189.60
  4. Step 4: Simplify right side
    10,665.12x = 91,086,648.77
  5. Step 5: Solve for x
    x = 91,086,648.77/10,665.12
  6. Step 6: Final answer
    x = 8,540.61

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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.