Home / 21,151,208.70-29,187,206.56-11,731,110.80

Finding the Fourth Proportional to 21,151,208.70, 29,187,206.56 and 11,731,110.80

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Solution

The fourth proportional to 21,151,208.70, 29,187,206.56 and 11,731,110.80 is: 16,188,122.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151,208.70 : 29,187,206.56 = 11,731,110.80 : x
  2. Step 2: Convert to fraction form
    21,151,208.70/29,187,206.56 = 11,731,110.80/x
  3. Step 3: Cross multiply
    21,151,208.70x = 29,187,206.56 × 11,731,110.80
  4. Step 4: Simplify right side
    21,151,208.70x = 342,398,353,966,574.69
  5. Step 5: Solve for x
    x = 342,398,353,966,574.69/21,151,208.70
  6. Step 6: Final answer
    x = 16,188,122.33

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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.