Home / 21,263,604.80-31,919,026.80-13,185,701.60

Finding the Fourth Proportional to 21,263,604.80, 31,919,026.80 and 13,185,701.60

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Solution

The fourth proportional to 21,263,604.80, 31,919,026.80 and 13,185,701.60 is: 19,793,199.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263,604.80 : 31,919,026.80 = 13,185,701.60 : x
  2. Step 2: Convert to fraction form
    21,263,604.80/31,919,026.80 = 13,185,701.60/x
  3. Step 3: Cross multiply
    21,263,604.80x = 31,919,026.80 × 13,185,701.60
  4. Step 4: Simplify right side
    21,263,604.80x = 420,874,762,747,202.88
  5. Step 5: Solve for x
    x = 420,874,762,747,202.88/21,263,604.80
  6. Step 6: Final answer
    x = 19,793,199.07

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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.