Home / 21,275,416.20-31,903,793.10-8,491,672.20

Finding the Fourth Proportional to 21,275,416.20, 31,903,793.10 and 8,491,672.20

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Solution

The fourth proportional to 21,275,416.20, 31,903,793.10 and 8,491,672.20 is: 12,733,783.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,416.20 : 31,903,793.10 = 8,491,672.20 : x
  2. Step 2: Convert to fraction form
    21,275,416.20/31,903,793.10 = 8,491,672.20/x
  3. Step 3: Cross multiply
    21,275,416.20x = 31,903,793.10 × 8,491,672.20
  4. Step 4: Simplify right side
    21,275,416.20x = 270,916,552,941,821.81
  5. Step 5: Solve for x
    x = 270,916,552,941,821.81/21,275,416.20
  6. Step 6: Final answer
    x = 12,733,783.93

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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.