Home / 20,177.38-27,847.26-12,219.40

Finding the Fourth Proportional to 20,177.38, 27,847.26 and 12,219.40

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Solution

The fourth proportional to 20,177.38, 27,847.26 and 12,219.40 is: 16,864.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.38 : 27,847.26 = 12,219.40 : x
  2. Step 2: Convert to fraction form
    20,177.38/27,847.26 = 12,219.40/x
  3. Step 3: Cross multiply
    20,177.38x = 27,847.26 × 12,219.40
  4. Step 4: Simplify right side
    20,177.38x = 340,276,808.84
  5. Step 5: Solve for x
    x = 340,276,808.84/20,177.38
  6. Step 6: Final answer
    x = 16,864.27

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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.