Home / 20,729.43-28,606.62-11,776.95

Finding the Fourth Proportional to 20,729.43, 28,606.62 and 11,776.95

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Solution

The fourth proportional to 20,729.43, 28,606.62 and 11,776.95 is: 16,252.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.43 : 28,606.62 = 11,776.95 : x
  2. Step 2: Convert to fraction form
    20,729.43/28,606.62 = 11,776.95/x
  3. Step 3: Cross multiply
    20,729.43x = 28,606.62 × 11,776.95
  4. Step 4: Simplify right side
    20,729.43x = 336,898,777.57
  5. Step 5: Solve for x
    x = 336,898,777.57/20,729.43
  6. Step 6: Final answer
    x = 16,252.20

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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.