Home / 21,342,146,657.60-29,442,504,615.84-12,881,265,815.36

Finding the Fourth Proportional to 21,342,146,657.60, 29,442,504,615.84 and 12,881,265,815.36

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Solution

The fourth proportional to 21,342,146,657.60, 29,442,504,615.84 and 12,881,265,815.36 is: 17,770,317,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342,146,657.60 : 29,442,504,615.84 = 12,881,265,815.36 : x
  2. Step 2: Convert to fraction form
    21,342,146,657.60/29,442,504,615.84 = 12,881,265,815.36/x
  3. Step 3: Cross multiply
    21,342,146,657.60x = 29,442,504,615.84 × 12,881,265,815.36
  4. Step 4: Simplify right side
    21,342,146,657.60x = 379,256,728,226,598,813,696
  5. Step 5: Solve for x
    x = 379,256,728,226,598,813,696/21,342,146,657.60
  6. Step 6: Final answer
    x = 17,770,317,780.64

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1.5x scale

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.