Home / 11,679.20-16,116.66-6,642.74

Finding the Fourth Proportional to 11,679.20, 16,116.66 and 6,642.74

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Solution

The fourth proportional to 11,679.20, 16,116.66 and 6,642.74 is: 9,166.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,679.20 : 16,116.66 = 6,642.74 : x
  2. Step 2: Convert to fraction form
    11,679.20/16,116.66 = 6,642.74/x
  3. Step 3: Cross multiply
    11,679.20x = 16,116.66 × 6,642.74
  4. Step 4: Simplify right side
    11,679.20x = 107,058,782.05
  5. Step 5: Solve for x
    x = 107,058,782.05/11,679.20
  6. Step 6: Final answer
    x = 9,166.62

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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.