Home / 20,642,403.70-30,987,225.15-12,127,537.90

Finding the Fourth Proportional to 20,642,403.70, 30,987,225.15 and 12,127,537.90

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Solution

The fourth proportional to 20,642,403.70, 30,987,225.15 and 12,127,537.90 is: 18,205,183.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,642,403.70 : 30,987,225.15 = 12,127,537.90 : x
  2. Step 2: Convert to fraction form
    20,642,403.70/30,987,225.15 = 12,127,537.90/x
  3. Step 3: Cross multiply
    20,642,403.70x = 30,987,225.15 × 12,127,537.90
  4. Step 4: Simplify right side
    20,642,403.70x = 375,798,747,422,458.19
  5. Step 5: Solve for x
    x = 375,798,747,422,458.19/20,642,403.70
  6. Step 6: Final answer
    x = 18,205,183.51

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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.