Home / 20,617,910.81-28,429,400.34-13,165,773.92

Finding the Fourth Proportional to 20,617,910.81, 28,429,400.34 and 13,165,773.92

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Solution

The fourth proportional to 20,617,910.81, 28,429,400.34 and 13,165,773.92 is: 18,153,878.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617,910.81 : 28,429,400.34 = 13,165,773.92 : x
  2. Step 2: Convert to fraction form
    20,617,910.81/28,429,400.34 = 13,165,773.92/x
  3. Step 3: Cross multiply
    20,617,910.81x = 28,429,400.34 × 13,165,773.92
  4. Step 4: Simplify right side
    20,617,910.81x = 374,295,057,557,611.12
  5. Step 5: Solve for x
    x = 374,295,057,557,611.12/20,617,910.81
  6. Step 6: Final answer
    x = 18,153,878.97

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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.