Home / 20,612,813.42-28,456,726.20-15,892,899.68

Finding the Fourth Proportional to 20,612,813.42, 28,456,726.20 and 15,892,899.68

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Solution

The fourth proportional to 20,612,813.42, 28,456,726.20 and 15,892,899.68 is: 21,940,716.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612,813.42 : 28,456,726.20 = 15,892,899.68 : x
  2. Step 2: Convert to fraction form
    20,612,813.42/28,456,726.20 = 15,892,899.68/x
  3. Step 3: Cross multiply
    20,612,813.42x = 28,456,726.20 × 15,892,899.68
  4. Step 4: Simplify right side
    20,612,813.42x = 452,259,894,717,827.62
  5. Step 5: Solve for x
    x = 452,259,894,717,827.62/20,612,813.42
  6. Step 6: Final answer
    x = 21,940,716.46

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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.