Home / 21,317,980.68-31,976,694.54-5,143,795.56

Finding the Fourth Proportional to 21,317,980.68, 31,976,694.54 and 5,143,795.56

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Solution

The fourth proportional to 21,317,980.68, 31,976,694.54 and 5,143,795.56 is: 7,715,626.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317,980.68 : 31,976,694.54 = 5,143,795.56 : x
  2. Step 2: Convert to fraction form
    21,317,980.68/31,976,694.54 = 5,143,795.56/x
  3. Step 3: Cross multiply
    21,317,980.68x = 31,976,694.54 × 5,143,795.56
  4. Step 4: Simplify right side
    21,317,980.68x = 164,481,579,398,328.22
  5. Step 5: Solve for x
    x = 164,481,579,398,328.22/21,317,980.68
  6. Step 6: Final answer
    x = 7,715,626.63

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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.