Home / 19,989,976.47-29,986,794.62-5,612,947.38

Finding the Fourth Proportional to 19,989,976.47, 29,986,794.62 and 5,612,947.38

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Solution

The fourth proportional to 19,989,976.47, 29,986,794.62 and 5,612,947.38 is: 8,419,934.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989,976.47 : 29,986,794.62 = 5,612,947.38 : x
  2. Step 2: Convert to fraction form
    19,989,976.47/29,986,794.62 = 5,612,947.38/x
  3. Step 3: Cross multiply
    19,989,976.47x = 29,986,794.62 × 5,612,947.38
  4. Step 4: Simplify right side
    19,989,976.47x = 168,314,300,402,361.38
  5. Step 5: Solve for x
    x = 168,314,300,402,361.38/19,989,976.47
  6. Step 6: Final answer
    x = 8,419,934.89

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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.