Home / 11,681.46-16,119.91-6,644.97

Finding the Fourth Proportional to 11,681.46, 16,119.91 and 6,644.97

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Solution

The fourth proportional to 11,681.46, 16,119.91 and 6,644.97 is: 9,169.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.46 : 16,119.91 = 6,644.97 : x
  2. Step 2: Convert to fraction form
    11,681.46/16,119.91 = 6,644.97/x
  3. Step 3: Cross multiply
    11,681.46x = 16,119.91 × 6,644.97
  4. Step 4: Simplify right side
    11,681.46x = 107,116,301.74
  5. Step 5: Solve for x
    x = 107,116,301.74/11,681.46
  6. Step 6: Final answer
    x = 9,169.77

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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.