Home / 11,211.32-16,821.78-4,642.28

Finding the Fourth Proportional to 11,211.32, 16,821.78 and 4,642.28

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Solution

The fourth proportional to 11,211.32, 16,821.78 and 4,642.28 is: 6,965.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.32 : 16,821.78 = 4,642.28 : x
  2. Step 2: Convert to fraction form
    11,211.32/16,821.78 = 4,642.28/x
  3. Step 3: Cross multiply
    11,211.32x = 16,821.78 × 4,642.28
  4. Step 4: Simplify right side
    11,211.32x = 78,091,412.86
  5. Step 5: Solve for x
    x = 78,091,412.86/11,211.32
  6. Step 6: Final answer
    x = 6,965.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.