Home / 11,943.82-16,479.80-7,228

Finding the Fourth Proportional to 11,943.82, 16,479.80 and 7,228

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Solution

The fourth proportional to 11,943.82, 16,479.80 and 7,228 is: 9,973.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.82 : 16,479.80 = 7,228 : x
  2. Step 2: Convert to fraction form
    11,943.82/16,479.80 = 7,228/x
  3. Step 3: Cross multiply
    11,943.82x = 16,479.80 × 7,228
  4. Step 4: Simplify right side
    11,943.82x = 119,115,958.26
  5. Step 5: Solve for x
    x = 119,115,958.26/11,943.82
  6. Step 6: Final answer
    x = 9,973.02

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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.