Home / 11,691.45-16,139.51-7,448.33

Finding the Fourth Proportional to 11,691.45, 16,139.51 and 7,448.33

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Solution

The fourth proportional to 11,691.45, 16,139.51 and 7,448.33 is: 10,282.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.45 : 16,139.51 = 7,448.33 : x
  2. Step 2: Convert to fraction form
    11,691.45/16,139.51 = 7,448.33/x
  3. Step 3: Cross multiply
    11,691.45x = 16,139.51 × 7,448.33
  4. Step 4: Simplify right side
    11,691.45x = 120,212,336.77
  5. Step 5: Solve for x
    x = 120,212,336.77/11,691.45
  6. Step 6: Final answer
    x = 10,282.07

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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.