Home / 21,070,065.33-31,607,629.65-7,420,391.64

Finding the Fourth Proportional to 21,070,065.33, 31,607,629.65 and 7,420,391.64

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Solution

The fourth proportional to 21,070,065.33, 31,607,629.65 and 7,420,391.64 is: 11,131,479.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070,065.33 : 31,607,629.65 = 7,420,391.64 : x
  2. Step 2: Convert to fraction form
    21,070,065.33/31,607,629.65 = 7,420,391.64/x
  3. Step 3: Cross multiply
    21,070,065.33x = 31,607,629.65 × 7,420,391.64
  4. Step 4: Simplify right side
    21,070,065.33x = 234,540,990,815,076.09
  5. Step 5: Solve for x
    x = 234,540,990,815,076.09/21,070,065.33
  6. Step 6: Final answer
    x = 11,131,479.05

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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.