Home / 12,872,026.88-17,758,390.84-7,288,991.78

Finding the Fourth Proportional to 12,872,026.88, 17,758,390.84 and 7,288,991.78

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Solution

The fourth proportional to 12,872,026.88, 17,758,390.84 and 7,288,991.78 is: 10,055,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872,026.88 : 17,758,390.84 = 7,288,991.78 : x
  2. Step 2: Convert to fraction form
    12,872,026.88/17,758,390.84 = 7,288,991.78/x
  3. Step 3: Cross multiply
    12,872,026.88x = 17,758,390.84 × 7,288,991.78
  4. Step 4: Simplify right side
    12,872,026.88x = 129,440,764,751,772.86
  5. Step 5: Solve for x
    x = 129,440,764,751,772.86/12,872,026.88
  6. Step 6: Final answer
    x = 10,055,973.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.