Home / 18,885,644.10-28,328,466.15-13,146,081.30

Finding the Fourth Proportional to 18,885,644.10, 28,328,466.15 and 13,146,081.30

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Solution

The fourth proportional to 18,885,644.10, 28,328,466.15 and 13,146,081.30 is: 19,719,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885,644.10 : 28,328,466.15 = 13,146,081.30 : x
  2. Step 2: Convert to fraction form
    18,885,644.10/28,328,466.15 = 13,146,081.30/x
  3. Step 3: Cross multiply
    18,885,644.10x = 28,328,466.15 × 13,146,081.30
  4. Step 4: Simplify right side
    18,885,644.10x = 372,408,319,112,198
  5. Step 5: Solve for x
    x = 372,408,319,112,198/18,885,644.10
  6. Step 6: Final answer
    x = 19,719,121.95

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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.