Home / 13,667,379.78-18,865,733.76-7,868,472.60

Finding the Fourth Proportional to 13,667,379.78, 18,865,733.76 and 7,868,472.60

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Solution

The fourth proportional to 13,667,379.78, 18,865,733.76 and 7,868,472.60 is: 10,861,226.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667,379.78 : 18,865,733.76 = 7,868,472.60 : x
  2. Step 2: Convert to fraction form
    13,667,379.78/18,865,733.76 = 7,868,472.60/x
  3. Step 3: Cross multiply
    13,667,379.78x = 18,865,733.76 × 7,868,472.60
  4. Step 4: Simplify right side
    13,667,379.78x = 148,444,509,169,454.97
  5. Step 5: Solve for x
    x = 148,444,509,169,454.97/13,667,379.78
  6. Step 6: Final answer
    x = 10,861,226.63

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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.