Home / 12,456,463.20-18,684,694.80-11,978,166.30

Finding the Fourth Proportional to 12,456,463.20, 18,684,694.80 and 11,978,166.30

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Solution

The fourth proportional to 12,456,463.20, 18,684,694.80 and 11,978,166.30 is: 17,967,249.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,463.20 : 18,684,694.80 = 11,978,166.30 : x
  2. Step 2: Convert to fraction form
    12,456,463.20/18,684,694.80 = 11,978,166.30/x
  3. Step 3: Cross multiply
    12,456,463.20x = 18,684,694.80 × 11,978,166.30
  4. Step 4: Simplify right side
    12,456,463.20x = 223,808,381,579,145.25
  5. Step 5: Solve for x
    x = 223,808,381,579,145.25/12,456,463.20
  6. Step 6: Final answer
    x = 17,967,249.45

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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.