Home / 21,129,905.05-29,159,203.93-11,711,296.58

Finding the Fourth Proportional to 21,129,905.05, 29,159,203.93 and 11,711,296.58

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Solution

The fourth proportional to 21,129,905.05, 29,159,203.93 and 11,711,296.58 is: 16,161,553.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,129,905.05 : 29,159,203.93 = 11,711,296.58 : x
  2. Step 2: Convert to fraction form
    21,129,905.05/29,159,203.93 = 11,711,296.58/x
  3. Step 3: Cross multiply
    21,129,905.05x = 29,159,203.93 × 11,711,296.58
  4. Step 4: Simplify right side
    21,129,905.05x = 341,492,085,085,857.25
  5. Step 5: Solve for x
    x = 341,492,085,085,857.25/21,129,905.05
  6. Step 6: Final answer
    x = 16,161,553.23

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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.