Home / 11,116.58-15,342.27-6,642.80

Finding the Fourth Proportional to 11,116.58, 15,342.27 and 6,642.80

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Solution

The fourth proportional to 11,116.58, 15,342.27 and 6,642.80 is: 9,167.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.58 : 15,342.27 = 6,642.80 : x
  2. Step 2: Convert to fraction form
    11,116.58/15,342.27 = 6,642.80/x
  3. Step 3: Cross multiply
    11,116.58x = 15,342.27 × 6,642.80
  4. Step 4: Simplify right side
    11,116.58x = 101,915,631.16
  5. Step 5: Solve for x
    x = 101,915,631.16/11,116.58
  6. Step 6: Final answer
    x = 9,167.89

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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.