Home / 13,173,890-18,179,968.20-7,144,578

Finding the Fourth Proportional to 13,173,890, 18,179,968.20 and 7,144,578

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Solution

The fourth proportional to 13,173,890, 18,179,968.20 and 7,144,578 is: 9,859,517.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173,890 : 18,179,968.20 = 7,144,578 : x
  2. Step 2: Convert to fraction form
    13,173,890/18,179,968.20 = 7,144,578/x
  3. Step 3: Cross multiply
    13,173,890x = 18,179,968.20 × 7,144,578
  4. Step 4: Simplify right side
    13,173,890x = 129,888,200,842,419.59
  5. Step 5: Solve for x
    x = 129,888,200,842,419.59/13,173,890
  6. Step 6: Final answer
    x = 9,859,517.64

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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.