Home / 31,728,220.88-43,798,337.96-21,428,894.30

Finding the Fourth Proportional to 31,728,220.88, 43,798,337.96 and 21,428,894.30

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Solution

The fourth proportional to 31,728,220.88, 43,798,337.96 and 21,428,894.30 is: 29,580,919.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728,220.88 : 43,798,337.96 = 21,428,894.30 : x
  2. Step 2: Convert to fraction form
    31,728,220.88/43,798,337.96 = 21,428,894.30/x
  3. Step 3: Cross multiply
    31,728,220.88x = 43,798,337.96 × 21,428,894.30
  4. Step 4: Simplify right side
    31,728,220.88x = 938,549,954,660,517.62
  5. Step 5: Solve for x
    x = 938,549,954,660,517.62/31,728,220.88
  6. Step 6: Final answer
    x = 29,580,919.72

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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.