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Finding the Fourth Proportional to 12,483,809.88, 18,726,362.82 and 3,964,813.08

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Solution

The fourth proportional to 12,483,809.88, 18,726,362.82 and 3,964,813.08 is: 5,947,425.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483,809.88 : 18,726,362.82 = 3,964,813.08 : x
  2. Step 2: Convert to fraction form
    12,483,809.88/18,726,362.82 = 3,964,813.08/x
  3. Step 3: Cross multiply
    12,483,809.88x = 18,726,362.82 × 3,964,813.08
  4. Step 4: Simplify right side
    12,483,809.88x = 74,246,528,249,561.69
  5. Step 5: Solve for x
    x = 74,246,528,249,561.69/12,483,809.88
  6. Step 6: Final answer
    x = 5,947,425.42

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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.