Home / 13,138,813.80-18,131,503.20-7,258,449.66

Finding the Fourth Proportional to 13,138,813.80, 18,131,503.20 and 7,258,449.66

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Solution

The fourth proportional to 13,138,813.80, 18,131,503.20 and 7,258,449.66 is: 10,016,627.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138,813.80 : 18,131,503.20 = 7,258,449.66 : x
  2. Step 2: Convert to fraction form
    13,138,813.80/18,131,503.20 = 7,258,449.66/x
  3. Step 3: Cross multiply
    13,138,813.80x = 18,131,503.20 × 7,258,449.66
  4. Step 4: Simplify right side
    13,138,813.80x = 131,606,603,237,328.91
  5. Step 5: Solve for x
    x = 131,606,603,237,328.91/13,138,813.80
  6. Step 6: Final answer
    x = 10,016,627.47

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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.