Home / 12,788,474.36-17,647,885.86-6,987,131.24

Finding the Fourth Proportional to 12,788,474.36, 17,647,885.86 and 6,987,131.24

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Solution

The fourth proportional to 12,788,474.36, 17,647,885.86 and 6,987,131.24 is: 9,642,127.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788,474.36 : 17,647,885.86 = 6,987,131.24 : x
  2. Step 2: Convert to fraction form
    12,788,474.36/17,647,885.86 = 6,987,131.24/x
  3. Step 3: Cross multiply
    12,788,474.36x = 17,647,885.86 × 6,987,131.24
  4. Step 4: Simplify right side
    12,788,474.36x = 123,308,094,612,360.27
  5. Step 5: Solve for x
    x = 123,308,094,612,360.27/12,788,474.36
  6. Step 6: Final answer
    x = 9,642,127.05

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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.