Home / 18,687,631.70-28,031,447.55-7,328,450.90

Finding the Fourth Proportional to 18,687,631.70, 28,031,447.55 and 7,328,450.90

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Solution

The fourth proportional to 18,687,631.70, 28,031,447.55 and 7,328,450.90 is: 10,992,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,631.70 : 28,031,447.55 = 7,328,450.90 : x
  2. Step 2: Convert to fraction form
    18,687,631.70/28,031,447.55 = 7,328,450.90/x
  3. Step 3: Cross multiply
    18,687,631.70x = 28,031,447.55 × 7,328,450.90
  4. Step 4: Simplify right side
    18,687,631.70x = 205,427,087,026,100.31
  5. Step 5: Solve for x
    x = 205,427,087,026,100.31/18,687,631.70
  6. Step 6: Final answer
    x = 10,992,676.35

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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.