Home / 20,785,540.20-31,178,310.30-18,659,776.20

Finding the Fourth Proportional to 20,785,540.20, 31,178,310.30 and 18,659,776.20

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Solution

The fourth proportional to 20,785,540.20, 31,178,310.30 and 18,659,776.20 is: 27,989,664.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,540.20 : 31,178,310.30 = 18,659,776.20 : x
  2. Step 2: Convert to fraction form
    20,785,540.20/31,178,310.30 = 18,659,776.20/x
  3. Step 3: Cross multiply
    20,785,540.20x = 31,178,310.30 × 18,659,776.20
  4. Step 4: Simplify right side
    20,785,540.20x = 581,780,292,492,154.88
  5. Step 5: Solve for x
    x = 581,780,292,492,154.88/20,785,540.20
  6. Step 6: Final answer
    x = 27,989,664.30

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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.