Home / 18,885,701.80-28,328,552.70-5,420,780.20

Finding the Fourth Proportional to 18,885,701.80, 28,328,552.70 and 5,420,780.20

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Solution

The fourth proportional to 18,885,701.80, 28,328,552.70 and 5,420,780.20 is: 8,131,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885,701.80 : 28,328,552.70 = 5,420,780.20 : x
  2. Step 2: Convert to fraction form
    18,885,701.80/28,328,552.70 = 5,420,780.20/x
  3. Step 3: Cross multiply
    18,885,701.80x = 28,328,552.70 × 5,420,780.20
  4. Step 4: Simplify right side
    18,885,701.80x = 153,562,857,570,816.53
  5. Step 5: Solve for x
    x = 153,562,857,570,816.53/18,885,701.80
  6. Step 6: Final answer
    x = 8,131,170.30

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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.