Home / 20,218,979.60-30,328,469.40-18,203,440.40

Finding the Fourth Proportional to 20,218,979.60, 30,328,469.40 and 18,203,440.40

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Solution

The fourth proportional to 20,218,979.60, 30,328,469.40 and 18,203,440.40 is: 27,305,160.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,979.60 : 30,328,469.40 = 18,203,440.40 : x
  2. Step 2: Convert to fraction form
    20,218,979.60/30,328,469.40 = 18,203,440.40/x
  3. Step 3: Cross multiply
    20,218,979.60x = 30,328,469.40 × 18,203,440.40
  4. Step 4: Simplify right side
    20,218,979.60x = 552,082,485,146,123.69
  5. Step 5: Solve for x
    x = 552,082,485,146,123.69/20,218,979.60
  6. Step 6: Final answer
    x = 27,305,160.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.