Home / 21,237,981,940.80-31,893,252,616.80-13,909,481,409.60

Finding the Fourth Proportional to 21,237,981,940.80, 31,893,252,616.80 and 13,909,481,409.60

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Solution

The fourth proportional to 21,237,981,940.80, 31,893,252,616.80 and 13,909,481,409.60 is: 20,887,982,935.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237,981,940.80 : 31,893,252,616.80 = 13,909,481,409.60 : x
  2. Step 2: Convert to fraction form
    21,237,981,940.80/31,893,252,616.80 = 13,909,481,409.60/x
  3. Step 3: Cross multiply
    21,237,981,940.80x = 31,893,252,616.80 × 13,909,481,409.60
  4. Step 4: Simplify right side
    21,237,981,940.80x = 443,618,604,365,056,180,224
  5. Step 5: Solve for x
    x = 443,618,604,365,056,180,224/21,237,981,940.80
  6. Step 6: Final answer
    x = 20,887,982,935.56

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1.5x scale

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.