Home / 20,776.53-28,671.77-11,824.72

Finding the Fourth Proportional to 20,776.53, 28,671.77 and 11,824.72

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Solution

The fourth proportional to 20,776.53, 28,671.77 and 11,824.72 is: 16,318.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.53 : 28,671.77 = 11,824.72 : x
  2. Step 2: Convert to fraction form
    20,776.53/28,671.77 = 11,824.72/x
  3. Step 3: Cross multiply
    20,776.53x = 28,671.77 × 11,824.72
  4. Step 4: Simplify right side
    20,776.53x = 339,035,610.04
  5. Step 5: Solve for x
    x = 339,035,610.04/20,776.53
  6. Step 6: Final answer
    x = 16,318.20

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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.