Home / 20,808,016.80-31,212,025.20-8,864,080.80

Finding the Fourth Proportional to 20,808,016.80, 31,212,025.20 and 8,864,080.80

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Solution

The fourth proportional to 20,808,016.80, 31,212,025.20 and 8,864,080.80 is: 13,296,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808,016.80 : 31,212,025.20 = 8,864,080.80 : x
  2. Step 2: Convert to fraction form
    20,808,016.80/31,212,025.20 = 8,864,080.80/x
  3. Step 3: Cross multiply
    20,808,016.80x = 31,212,025.20 × 8,864,080.80
  4. Step 4: Simplify right side
    20,808,016.80x = 276,665,913,304,436.19
  5. Step 5: Solve for x
    x = 276,665,913,304,436.19/20,808,016.80
  6. Step 6: Final answer
    x = 13,296,121.20

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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.