Home / 12,456,556.40-18,662,716.20-7,723,218.80

Finding the Fourth Proportional to 12,456,556.40, 18,662,716.20 and 7,723,218.80

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Solution

The fourth proportional to 12,456,556.40, 18,662,716.20 and 7,723,218.80 is: 11,571,114.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,556.40 : 18,662,716.20 = 7,723,218.80 : x
  2. Step 2: Convert to fraction form
    12,456,556.40/18,662,716.20 = 7,723,218.80/x
  3. Step 3: Cross multiply
    12,456,556.40x = 18,662,716.20 × 7,723,218.80
  4. Step 4: Simplify right side
    12,456,556.40x = 144,136,240,614,904.56
  5. Step 5: Solve for x
    x = 144,136,240,614,904.56/12,456,556.40
  6. Step 6: Final answer
    x = 11,571,114.52

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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.