Home / 19,215,391.80-28,818,559.86-7,078,264.44

Finding the Fourth Proportional to 19,215,391.80, 28,818,559.86 and 7,078,264.44

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Solution

The fourth proportional to 19,215,391.80, 28,818,559.86 and 7,078,264.44 is: 10,615,728.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215,391.80 : 28,818,559.86 = 7,078,264.44 : x
  2. Step 2: Convert to fraction form
    19,215,391.80/28,818,559.86 = 7,078,264.44/x
  3. Step 3: Cross multiply
    19,215,391.80x = 28,818,559.86 × 7,078,264.44
  4. Step 4: Simplify right side
    19,215,391.80x = 203,985,387,469,049.38
  5. Step 5: Solve for x
    x = 203,985,387,469,049.38/19,215,391.80
  6. Step 6: Final answer
    x = 10,615,728.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.