Home / 15,839,992.05-21,859,358.19-9,728,420.55

Finding the Fourth Proportional to 15,839,992.05, 21,859,358.19 and 9,728,420.55

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Solution

The fourth proportional to 15,839,992.05, 21,859,358.19 and 9,728,420.55 is: 13,425,324.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839,992.05 : 21,859,358.19 = 9,728,420.55 : x
  2. Step 2: Convert to fraction form
    15,839,992.05/21,859,358.19 = 9,728,420.55/x
  3. Step 3: Cross multiply
    15,839,992.05x = 21,859,358.19 × 9,728,420.55
  4. Step 4: Simplify right side
    15,839,992.05x = 212,657,029,267,467.91
  5. Step 5: Solve for x
    x = 212,657,029,267,467.91/15,839,992.05
  6. Step 6: Final answer
    x = 13,425,324.25

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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.