Home / 21,302,999.20-31,917,757.20-9,920,101.60

Finding the Fourth Proportional to 21,302,999.20, 31,917,757.20 and 9,920,101.60

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Solution

The fourth proportional to 21,302,999.20, 31,917,757.20 and 9,920,101.60 is: 14,863,043.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302,999.20 : 31,917,757.20 = 9,920,101.60 : x
  2. Step 2: Convert to fraction form
    21,302,999.20/31,917,757.20 = 9,920,101.60/x
  3. Step 3: Cross multiply
    21,302,999.20x = 31,917,757.20 × 9,920,101.60
  4. Step 4: Simplify right side
    21,302,999.20x = 316,627,394,268,131.50
  5. Step 5: Solve for x
    x = 316,627,394,268,131.50/21,302,999.20
  6. Step 6: Final answer
    x = 14,863,043.05

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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.