Home / 11,691.36-16,128.75-6,973.92

Finding the Fourth Proportional to 11,691.36, 16,128.75 and 6,973.92

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Solution

The fourth proportional to 11,691.36, 16,128.75 and 6,973.92 is: 9,620.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.36 : 16,128.75 = 6,973.92 : x
  2. Step 2: Convert to fraction form
    11,691.36/16,128.75 = 6,973.92/x
  3. Step 3: Cross multiply
    11,691.36x = 16,128.75 × 6,973.92
  4. Step 4: Simplify right side
    11,691.36x = 112,480,612.20
  5. Step 5: Solve for x
    x = 112,480,612.20/11,691.36
  6. Step 6: Final answer
    x = 9,620.83

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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.