Home / 13,140,078.56-18,131,516.48-7,338,120.56

Finding the Fourth Proportional to 13,140,078.56, 18,131,516.48 and 7,338,120.56

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Solution

The fourth proportional to 13,140,078.56, 18,131,516.48 and 7,338,120.56 is: 10,125,605.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140,078.56 : 18,131,516.48 = 7,338,120.56 : x
  2. Step 2: Convert to fraction form
    13,140,078.56/18,131,516.48 = 7,338,120.56/x
  3. Step 3: Cross multiply
    13,140,078.56x = 18,131,516.48 × 7,338,120.56
  4. Step 4: Simplify right side
    13,140,078.56x = 133,051,253,865,866.83
  5. Step 5: Solve for x
    x = 133,051,253,865,866.83/13,140,078.56
  6. Step 6: Final answer
    x = 10,125,605.66

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1.5x scale

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.