Home / 11,619.81-16,040.30-6,905.61

Finding the Fourth Proportional to 11,619.81, 16,040.30 and 6,905.61

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Solution

The fourth proportional to 11,619.81, 16,040.30 and 6,905.61 is: 9,532.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,619.81 : 16,040.30 = 6,905.61 : x
  2. Step 2: Convert to fraction form
    11,619.81/16,040.30 = 6,905.61/x
  3. Step 3: Cross multiply
    11,619.81x = 16,040.30 × 6,905.61
  4. Step 4: Simplify right side
    11,619.81x = 110,768,021.55
  5. Step 5: Solve for x
    x = 110,768,021.55/11,619.81
  6. Step 6: Final answer
    x = 9,532.69

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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.