Home / 20,890,431,186.78-28,828,672,244.46-11,374,960,152.78

Finding the Fourth Proportional to 20,890,431,186.78, 28,828,672,244.46 and 11,374,960,152.78

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Solution

The fourth proportional to 20,890,431,186.78, 28,828,672,244.46 and 11,374,960,152.78 is: 15,697,378,149.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890,431,186.78 : 28,828,672,244.46 = 11,374,960,152.78 : x
  2. Step 2: Convert to fraction form
    20,890,431,186.78/28,828,672,244.46 = 11,374,960,152.78/x
  3. Step 3: Cross multiply
    20,890,431,186.78x = 28,828,672,244.46 × 11,374,960,152.78
  4. Step 4: Simplify right side
    20,890,431,186.78x = 327,924,998,038,287,286,272
  5. Step 5: Solve for x
    x = 327,924,998,038,287,286,272/20,890,431,186.78
  6. Step 6: Final answer
    x = 15,697,378,149.18

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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.