Home / 12,788,358.78-17,647,726.56-6,987,015.66

Finding the Fourth Proportional to 12,788,358.78, 17,647,726.56 and 6,987,015.66

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Solution

The fourth proportional to 12,788,358.78, 17,647,726.56 and 6,987,015.66 is: 9,641,967.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788,358.78 : 17,647,726.56 = 6,987,015.66 : x
  2. Step 2: Convert to fraction form
    12,788,358.78/17,647,726.56 = 6,987,015.66/x
  3. Step 3: Cross multiply
    12,788,358.78x = 17,647,726.56 × 6,987,015.66
  4. Step 4: Simplify right side
    12,788,358.78x = 123,304,941,838,117.92
  5. Step 5: Solve for x
    x = 123,304,941,838,117.92/12,788,358.78
  6. Step 6: Final answer
    x = 9,641,967.66

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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.