Home / 12,788,980.66-17,648,917.30-6,987,761.88

Finding the Fourth Proportional to 12,788,980.66, 17,648,917.30 and 6,987,761.88

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Solution

The fourth proportional to 12,788,980.66, 17,648,917.30 and 6,987,761.88 is: 9,643,179.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788,980.66 : 17,648,917.30 = 6,987,761.88 : x
  2. Step 2: Convert to fraction form
    12,788,980.66/17,648,917.30 = 6,987,761.88/x
  3. Step 3: Cross multiply
    12,788,980.66x = 17,648,917.30 × 6,987,761.88
  4. Step 4: Simplify right side
    12,788,980.66x = 123,326,431,532,212.53
  5. Step 5: Solve for x
    x = 123,326,431,532,212.53/12,788,980.66
  6. Step 6: Final answer
    x = 9,643,179.14

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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.