Home / 20,611,981.80-30,917,972.70-20,139,589.80

Finding the Fourth Proportional to 20,611,981.80, 30,917,972.70 and 20,139,589.80

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Solution

The fourth proportional to 20,611,981.80, 30,917,972.70 and 20,139,589.80 is: 30,209,384.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611,981.80 : 30,917,972.70 = 20,139,589.80 : x
  2. Step 2: Convert to fraction form
    20,611,981.80/30,917,972.70 = 20,139,589.80/x
  3. Step 3: Cross multiply
    20,611,981.80x = 30,917,972.70 × 20,139,589.80
  4. Step 4: Simplify right side
    20,611,981.80x = 622,675,287,625,598.50
  5. Step 5: Solve for x
    x = 622,675,287,625,598.50/20,611,981.80
  6. Step 6: Final answer
    x = 30,209,384.70

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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.