Home / 20,728,018.80-31,096,013.40-7,947,526.82

Finding the Fourth Proportional to 20,728,018.80, 31,096,013.40 and 7,947,526.82

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Solution

The fourth proportional to 20,728,018.80, 31,096,013.40 and 7,947,526.82 is: 11,922,818.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,018.80 : 31,096,013.40 = 7,947,526.82 : x
  2. Step 2: Convert to fraction form
    20,728,018.80/31,096,013.40 = 7,947,526.82/x
  3. Step 3: Cross multiply
    20,728,018.80x = 31,096,013.40 × 7,947,526.82
  4. Step 4: Simplify right side
    20,728,018.80x = 247,136,400,491,579.38
  5. Step 5: Solve for x
    x = 247,136,400,491,579.38/20,728,018.80
  6. Step 6: Final answer
    x = 11,922,818.23

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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.