Home / 20,387,723.62-28,128,725.22-11,565,722.80

Finding the Fourth Proportional to 20,387,723.62, 28,128,725.22 and 11,565,722.80

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Solution

The fourth proportional to 20,387,723.62, 28,128,725.22 and 11,565,722.80 is: 15,957,104.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387,723.62 : 28,128,725.22 = 11,565,722.80 : x
  2. Step 2: Convert to fraction form
    20,387,723.62/28,128,725.22 = 11,565,722.80/x
  3. Step 3: Cross multiply
    20,387,723.62x = 28,128,725.22 × 11,565,722.80
  4. Step 4: Simplify right side
    20,387,723.62x = 325,329,038,611,889
  5. Step 5: Solve for x
    x = 325,329,038,611,889/20,387,723.62
  6. Step 6: Final answer
    x = 15,957,104.61

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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.