Home / 13,345.97-18,418.82-7,680.94

Finding the Fourth Proportional to 13,345.97, 18,418.82 and 7,680.94

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Solution

The fourth proportional to 13,345.97, 18,418.82 and 7,680.94 is: 10,600.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.97 : 18,418.82 = 7,680.94 : x
  2. Step 2: Convert to fraction form
    13,345.97/18,418.82 = 7,680.94/x
  3. Step 3: Cross multiply
    13,345.97x = 18,418.82 × 7,680.94
  4. Step 4: Simplify right side
    13,345.97x = 141,473,766.84
  5. Step 5: Solve for x
    x = 141,473,766.84/13,345.97
  6. Step 6: Final answer
    x = 10,600.48

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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.