Home / 13,200,345.19-18,217,318.21-7,399,128.43

Finding the Fourth Proportional to 13,200,345.19, 18,217,318.21 and 7,399,128.43

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Solution

The fourth proportional to 13,200,345.19, 18,217,318.21 and 7,399,128.43 is: 10,211,269.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200,345.19 : 18,217,318.21 = 7,399,128.43 : x
  2. Step 2: Convert to fraction form
    13,200,345.19/18,217,318.21 = 7,399,128.43/x
  3. Step 3: Cross multiply
    13,200,345.19x = 18,217,318.21 × 7,399,128.43
  4. Step 4: Simplify right side
    13,200,345.19x = 134,792,277,131,861.66
  5. Step 5: Solve for x
    x = 134,792,277,131,861.66/13,200,345.19
  6. Step 6: Final answer
    x = 10,211,269.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.