Home / 12,872,981,838.72-17,766,186,120-7,157,836,095.48

Finding the Fourth Proportional to 12,872,981,838.72, 17,766,186,120 and 7,157,836,095.48

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Solution

The fourth proportional to 12,872,981,838.72, 17,766,186,120 and 7,157,836,095.48 is: 9,878,631,841.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872,981,838.72 : 17,766,186,120 = 7,157,836,095.48 : x
  2. Step 2: Convert to fraction form
    12,872,981,838.72/17,766,186,120 = 7,157,836,095.48/x
  3. Step 3: Cross multiply
    12,872,981,838.72x = 17,766,186,120 × 7,157,836,095.48
  4. Step 4: Simplify right side
    12,872,981,838.72x = 127,167,448,288,751,763,456
  5. Step 5: Solve for x
    x = 127,167,448,288,751,763,456/12,872,981,838.72
  6. Step 6: Final answer
    x = 9,878,631,841.63

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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.