Home / 11,536.08-15,921-6,820.80

Finding the Fourth Proportional to 11,536.08, 15,921 and 6,820.80

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Solution

The fourth proportional to 11,536.08, 15,921 and 6,820.80 is: 9,413.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,536.08 : 15,921 = 6,820.80 : x
  2. Step 2: Convert to fraction form
    11,536.08/15,921 = 6,820.80/x
  3. Step 3: Cross multiply
    11,536.08x = 15,921 × 6,820.80
  4. Step 4: Simplify right side
    11,536.08x = 108,593,956.80
  5. Step 5: Solve for x
    x = 108,593,956.80/11,536.08
  6. Step 6: Final answer
    x = 9,413.42

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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.