Home / 20,611,990.80-30,917,986.20-13,431,632.40

Finding the Fourth Proportional to 20,611,990.80, 30,917,986.20 and 13,431,632.40

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Solution

The fourth proportional to 20,611,990.80, 30,917,986.20 and 13,431,632.40 is: 20,147,448.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611,990.80 : 30,917,986.20 = 13,431,632.40 : x
  2. Step 2: Convert to fraction form
    20,611,990.80/30,917,986.20 = 13,431,632.40/x
  3. Step 3: Cross multiply
    20,611,990.80x = 30,917,986.20 × 13,431,632.40
  4. Step 4: Simplify right side
    20,611,990.80x = 415,279,025,186,672.88
  5. Step 5: Solve for x
    x = 415,279,025,186,672.88/20,611,990.80
  6. Step 6: Final answer
    x = 20,147,448.60

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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.