Home / 20,962.81-28,932.78-12,016.30

Finding the Fourth Proportional to 20,962.81, 28,932.78 and 12,016.30

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Solution

The fourth proportional to 20,962.81, 28,932.78 and 12,016.30 is: 16,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.81 : 28,932.78 = 12,016.30 : x
  2. Step 2: Convert to fraction form
    20,962.81/28,932.78 = 12,016.30/x
  3. Step 3: Cross multiply
    20,962.81x = 28,932.78 × 12,016.30
  4. Step 4: Simplify right side
    20,962.81x = 347,664,964.31
  5. Step 5: Solve for x
    x = 347,664,964.31/20,962.81
  6. Step 6: Final answer
    x = 16,584.85

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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.