Home / 12,642,716.52-18,963,296.30-7,785,948.56

Finding the Fourth Proportional to 12,642,716.52, 18,963,296.30 and 7,785,948.56

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Solution

The fourth proportional to 12,642,716.52, 18,963,296.30 and 7,785,948.56 is: 11,678,443.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642,716.52 : 18,963,296.30 = 7,785,948.56 : x
  2. Step 2: Convert to fraction form
    12,642,716.52/18,963,296.30 = 7,785,948.56/x
  3. Step 3: Cross multiply
    12,642,716.52x = 18,963,296.30 × 7,785,948.56
  4. Step 4: Simplify right side
    12,642,716.52x = 147,647,249,444,486.69
  5. Step 5: Solve for x
    x = 147,647,249,444,486.69/12,642,716.52
  6. Step 6: Final answer
    x = 11,678,443.41

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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.