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Finding the Fourth Proportional to 13,609,809.60, 20,414,714.40 and 6,807,364.80

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Solution

The fourth proportional to 13,609,809.60, 20,414,714.40 and 6,807,364.80 is: 10,211,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609,809.60 : 20,414,714.40 = 6,807,364.80 : x
  2. Step 2: Convert to fraction form
    13,609,809.60/20,414,714.40 = 6,807,364.80/x
  3. Step 3: Cross multiply
    13,609,809.60x = 20,414,714.40 × 6,807,364.80
  4. Step 4: Simplify right side
    13,609,809.60x = 138,970,408,208,613.11
  5. Step 5: Solve for x
    x = 138,970,408,208,613.11/13,609,809.60
  6. Step 6: Final answer
    x = 10,211,047.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.