Home / 21,317,979.68-31,976,693.04-5,143,794.56

Finding the Fourth Proportional to 21,317,979.68, 31,976,693.04 and 5,143,794.56

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Solution

The fourth proportional to 21,317,979.68, 31,976,693.04 and 5,143,794.56 is: 7,715,625.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317,979.68 : 31,976,693.04 = 5,143,794.56 : x
  2. Step 2: Convert to fraction form
    21,317,979.68/31,976,693.04 = 5,143,794.56/x
  3. Step 3: Cross multiply
    21,317,979.68x = 31,976,693.04 × 5,143,794.56
  4. Step 4: Simplify right side
    21,317,979.68x = 164,481,539,705,941.84
  5. Step 5: Solve for x
    x = 164,481,539,705,941.84/21,317,979.68
  6. Step 6: Final answer
    x = 7,715,625.13

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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.