Home / 20,443.98-28,212.84-11,491.50

Finding the Fourth Proportional to 20,443.98, 28,212.84 and 11,491.50

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Solution

The fourth proportional to 20,443.98, 28,212.84 and 11,491.50 is: 15,858.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.98 : 28,212.84 = 11,491.50 : x
  2. Step 2: Convert to fraction form
    20,443.98/28,212.84 = 11,491.50/x
  3. Step 3: Cross multiply
    20,443.98x = 28,212.84 × 11,491.50
  4. Step 4: Simplify right side
    20,443.98x = 324,207,850.86
  5. Step 5: Solve for x
    x = 324,207,850.86/20,443.98
  6. Step 6: Final answer
    x = 15,858.35

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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.