Home / 18,885,715.30-28,328,572.95-5,420,793.70

Finding the Fourth Proportional to 18,885,715.30, 28,328,572.95 and 5,420,793.70

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Solution

The fourth proportional to 18,885,715.30, 28,328,572.95 and 5,420,793.70 is: 8,131,190.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885,715.30 : 28,328,572.95 = 5,420,793.70 : x
  2. Step 2: Convert to fraction form
    18,885,715.30/28,328,572.95 = 5,420,793.70/x
  3. Step 3: Cross multiply
    18,885,715.30x = 28,328,572.95 × 5,420,793.70
  4. Step 4: Simplify right side
    18,885,715.30x = 153,563,349,777,350.41
  5. Step 5: Solve for x
    x = 153,563,349,777,350.41/18,885,715.30
  6. Step 6: Final answer
    x = 8,131,190.55

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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.