Home / 20,529,078.31-30,777,175.78-10,288,681.36

Finding the Fourth Proportional to 20,529,078.31, 30,777,175.78 and 10,288,681.36

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Solution

The fourth proportional to 20,529,078.31, 30,777,175.78 and 10,288,681.36 is: 15,424,781.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529,078.31 : 30,777,175.78 = 10,288,681.36 : x
  2. Step 2: Convert to fraction form
    20,529,078.31/30,777,175.78 = 10,288,681.36/x
  3. Step 3: Cross multiply
    20,529,078.31x = 30,777,175.78 × 10,288,681.36
  4. Step 4: Simplify right side
    20,529,078.31x = 316,656,554,716,338.62
  5. Step 5: Solve for x
    x = 316,656,554,716,338.62/20,529,078.31
  6. Step 6: Final answer
    x = 15,424,781.86

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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.