Home / 20,620,574.78-30,934,845.20-7,840,085.76

Finding the Fourth Proportional to 20,620,574.78, 30,934,845.20 and 7,840,085.76

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Solution

The fourth proportional to 20,620,574.78, 30,934,845.20 and 7,840,085.76 is: 11,761,643.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620,574.78 : 30,934,845.20 = 7,840,085.76 : x
  2. Step 2: Convert to fraction form
    20,620,574.78/30,934,845.20 = 7,840,085.76/x
  3. Step 3: Cross multiply
    20,620,574.78x = 30,934,845.20 × 7,840,085.76
  4. Step 4: Simplify right side
    20,620,574.78x = 242,531,839,359,924.56
  5. Step 5: Solve for x
    x = 242,531,839,359,924.56/20,620,574.78
  6. Step 6: Final answer
    x = 11,761,643.02

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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.