Home / 20,729.21-28,606.97-11,776.55

Finding the Fourth Proportional to 20,729.21, 28,606.97 and 11,776.55

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Solution

The fourth proportional to 20,729.21, 28,606.97 and 11,776.55 is: 16,252.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.21 : 28,606.97 = 11,776.55 : x
  2. Step 2: Convert to fraction form
    20,729.21/28,606.97 = 11,776.55/x
  3. Step 3: Cross multiply
    20,729.21x = 28,606.97 × 11,776.55
  4. Step 4: Simplify right side
    20,729.21x = 336,891,298.96
  5. Step 5: Solve for x
    x = 336,891,298.96/20,729.21
  6. Step 6: Final answer
    x = 16,252.01

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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.