Home / 20,123,109.90-30,191,553.57-8,603,830.98

Finding the Fourth Proportional to 20,123,109.90, 30,191,553.57 and 8,603,830.98

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Solution

The fourth proportional to 20,123,109.90, 30,191,553.57 and 8,603,830.98 is: 12,908,691.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123,109.90 : 30,191,553.57 = 8,603,830.98 : x
  2. Step 2: Convert to fraction form
    20,123,109.90/30,191,553.57 = 8,603,830.98/x
  3. Step 3: Cross multiply
    20,123,109.90x = 30,191,553.57 × 8,603,830.98
  4. Step 4: Simplify right side
    20,123,109.90x = 259,763,023,939,895.62
  5. Step 5: Solve for x
    x = 259,763,023,939,895.62/20,123,109.90
  6. Step 6: Final answer
    x = 12,908,691.81

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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.