Home / 11,987.76-16,543.20-6,682.92

Finding the Fourth Proportional to 11,987.76, 16,543.20 and 6,682.92

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Solution

The fourth proportional to 11,987.76, 16,543.20 and 6,682.92 is: 9,222.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.76 : 16,543.20 = 6,682.92 : x
  2. Step 2: Convert to fraction form
    11,987.76/16,543.20 = 6,682.92/x
  3. Step 3: Cross multiply
    11,987.76x = 16,543.20 × 6,682.92
  4. Step 4: Simplify right side
    11,987.76x = 110,556,882.14
  5. Step 5: Solve for x
    x = 110,556,882.14/11,987.76
  6. Step 6: Final answer
    x = 9,222.48

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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.