Home / 20,729.34-28,607.76-11,776.86

Finding the Fourth Proportional to 20,729.34, 28,607.76 and 11,776.86

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Solution

The fourth proportional to 20,729.34, 28,607.76 and 11,776.86 is: 16,252.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.34 : 28,607.76 = 11,776.86 : x
  2. Step 2: Convert to fraction form
    20,729.34/28,607.76 = 11,776.86/x
  3. Step 3: Cross multiply
    20,729.34x = 28,607.76 × 11,776.86
  4. Step 4: Simplify right side
    20,729.34x = 336,909,584.43
  5. Step 5: Solve for x
    x = 336,909,584.43/20,729.34
  6. Step 6: Final answer
    x = 16,252.79

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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.