Home / 20,682,176.90-28,540,088.82-12,422,587.32

Finding the Fourth Proportional to 20,682,176.90, 28,540,088.82 and 12,422,587.32

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Solution

The fourth proportional to 20,682,176.90, 28,540,088.82 and 12,422,587.32 is: 17,142,380.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682,176.90 : 28,540,088.82 = 12,422,587.32 : x
  2. Step 2: Convert to fraction form
    20,682,176.90/28,540,088.82 = 12,422,587.32/x
  3. Step 3: Cross multiply
    20,682,176.90x = 28,540,088.82 × 12,422,587.32
  4. Step 4: Simplify right side
    20,682,176.90x = 354,541,745,487,005.75
  5. Step 5: Solve for x
    x = 354,541,745,487,005.75/20,682,176.90
  6. Step 6: Final answer
    x = 17,142,380.48

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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.