Home / 10,866,618.31-16,273,023.09-7,981,142.80

Finding the Fourth Proportional to 10,866,618.31, 16,273,023.09 and 7,981,142.80

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Solution

The fourth proportional to 10,866,618.31, 16,273,023.09 and 7,981,142.80 is: 11,951,953.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,866,618.31 : 16,273,023.09 = 7,981,142.80 : x
  2. Step 2: Convert to fraction form
    10,866,618.31/16,273,023.09 = 7,981,142.80/x
  3. Step 3: Cross multiply
    10,866,618.31x = 16,273,023.09 × 7,981,142.80
  4. Step 4: Simplify right side
    10,866,618.31x = 129,877,320,987,622.14
  5. Step 5: Solve for x
    x = 129,877,320,987,622.14/10,866,618.31
  6. Step 6: Final answer
    x = 11,951,953.89

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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.