Home / 13,318,439.78-18,245,957.16-12,820,500.11

Finding the Fourth Proportional to 13,318,439.78, 18,245,957.16 and 12,820,500.11

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Solution

The fourth proportional to 13,318,439.78, 18,245,957.16 and 12,820,500.11 is: 17,563,791.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318,439.78 : 18,245,957.16 = 12,820,500.11 : x
  2. Step 2: Convert to fraction form
    13,318,439.78/18,245,957.16 = 12,820,500.11/x
  3. Step 3: Cross multiply
    13,318,439.78x = 18,245,957.16 × 12,820,500.11
  4. Step 4: Simplify right side
    13,318,439.78x = 233,922,295,685,605.50
  5. Step 5: Solve for x
    x = 233,922,295,685,605.50/13,318,439.78
  6. Step 6: Final answer
    x = 17,563,791.23

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.