Home / 11,119.70-15,342.68-6,642.58

Finding the Fourth Proportional to 11,119.70, 15,342.68 and 6,642.58

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Solution

The fourth proportional to 11,119.70, 15,342.68 and 6,642.58 is: 9,165.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.70 : 15,342.68 = 6,642.58 : x
  2. Step 2: Convert to fraction form
    11,119.70/15,342.68 = 6,642.58/x
  3. Step 3: Cross multiply
    11,119.70x = 15,342.68 × 6,642.58
  4. Step 4: Simplify right side
    11,119.70x = 101,914,979.31
  5. Step 5: Solve for x
    x = 101,914,979.31/11,119.70
  6. Step 6: Final answer
    x = 9,165.26

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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.