Home / 13,138,820.55-18,131,512.53-7,258,456.41

Finding the Fourth Proportional to 13,138,820.55, 18,131,512.53 and 7,258,456.41

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Solution

The fourth proportional to 13,138,820.55, 18,131,512.53 and 7,258,456.41 is: 10,016,636.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138,820.55 : 18,131,512.53 = 7,258,456.41 : x
  2. Step 2: Convert to fraction form
    13,138,820.55/18,131,512.53 = 7,258,456.41/x
  3. Step 3: Cross multiply
    13,138,820.55x = 18,131,512.53 × 7,258,456.41
  4. Step 4: Simplify right side
    13,138,820.55x = 131,606,793,346,373.83
  5. Step 5: Solve for x
    x = 131,606,793,346,373.83/13,138,820.55
  6. Step 6: Final answer
    x = 10,016,636.79

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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.