Home / 21,236,516.11-29,308,640.87-12,981,410.53

Finding the Fourth Proportional to 21,236,516.11, 29,308,640.87 and 12,981,410.53

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Solution

The fourth proportional to 21,236,516.11, 29,308,640.87 and 12,981,410.53 is: 17,915,721.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236,516.11 : 29,308,640.87 = 12,981,410.53 : x
  2. Step 2: Convert to fraction form
    21,236,516.11/29,308,640.87 = 12,981,410.53/x
  3. Step 3: Cross multiply
    21,236,516.11x = 29,308,640.87 × 12,981,410.53
  4. Step 4: Simplify right side
    21,236,516.11x = 380,467,499,168,988.25
  5. Step 5: Solve for x
    x = 380,467,499,168,988.25/21,236,516.11
  6. Step 6: Final answer
    x = 17,915,721.07

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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.