Home / 20,969,865.36-28,930,514.76-12,265,255.44

Finding the Fourth Proportional to 20,969,865.36, 28,930,514.76 and 12,265,255.44

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Solution

The fourth proportional to 20,969,865.36, 28,930,514.76 and 12,265,255.44 is: 16,921,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969,865.36 : 28,930,514.76 = 12,265,255.44 : x
  2. Step 2: Convert to fraction form
    20,969,865.36/28,930,514.76 = 12,265,255.44/x
  3. Step 3: Cross multiply
    20,969,865.36x = 28,930,514.76 × 12,265,255.44
  4. Step 4: Simplify right side
    20,969,865.36x = 354,840,153,542,090.31
  5. Step 5: Solve for x
    x = 354,840,153,542,090.31/20,969,865.36
  6. Step 6: Final answer
    x = 16,921,432.13

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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.