Home / 20,383,649.47-28,118,716.88-12,117,832.05

Finding the Fourth Proportional to 20,383,649.47, 28,118,716.88 and 12,117,832.05

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Solution

The fourth proportional to 20,383,649.47, 28,118,716.88 and 12,117,832.05 is: 16,716,235.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383,649.47 : 28,118,716.88 = 12,117,832.05 : x
  2. Step 2: Convert to fraction form
    20,383,649.47/28,118,716.88 = 12,117,832.05/x
  3. Step 3: Cross multiply
    20,383,649.47x = 28,118,716.88 × 12,117,832.05
  4. Step 4: Simplify right side
    20,383,649.47x = 340,737,888,613,340
  5. Step 5: Solve for x
    x = 340,737,888,613,340/20,383,649.47
  6. Step 6: Final answer
    x = 16,716,235.68

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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.