Home / 20,156.58-27,808.71-12,195.90

Finding the Fourth Proportional to 20,156.58, 27,808.71 and 12,195.90

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Solution

The fourth proportional to 20,156.58, 27,808.71 and 12,195.90 is: 16,825.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.58 : 27,808.71 = 12,195.90 : x
  2. Step 2: Convert to fraction form
    20,156.58/27,808.71 = 12,195.90/x
  3. Step 3: Cross multiply
    20,156.58x = 27,808.71 × 12,195.90
  4. Step 4: Simplify right side
    20,156.58x = 339,152,246.29
  5. Step 5: Solve for x
    x = 339,152,246.29/20,156.58
  6. Step 6: Final answer
    x = 16,825.88

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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.