Home / 20,687,279.18-28,548,445.14-11,990,496.29

Finding the Fourth Proportional to 20,687,279.18, 28,548,445.14 and 11,990,496.29

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Solution

The fourth proportional to 20,687,279.18, 28,548,445.14 and 11,990,496.29 is: 16,546,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,279.18 : 28,548,445.14 = 11,990,496.29 : x
  2. Step 2: Convert to fraction form
    20,687,279.18/28,548,445.14 = 11,990,496.29/x
  3. Step 3: Cross multiply
    20,687,279.18x = 28,548,445.14 × 11,990,496.29
  4. Step 4: Simplify right side
    20,687,279.18x = 342,310,025,393,696.31
  5. Step 5: Solve for x
    x = 342,310,025,393,696.31/20,687,279.18
  6. Step 6: Final answer
    x = 16,546,884.80

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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.