Home / 13,403.97-18,492.80-7,738.56

Finding the Fourth Proportional to 13,403.97, 18,492.80 and 7,738.56

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Solution

The fourth proportional to 13,403.97, 18,492.80 and 7,738.56 is: 10,676.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.97 : 18,492.80 = 7,738.56 : x
  2. Step 2: Convert to fraction form
    13,403.97/18,492.80 = 7,738.56/x
  3. Step 3: Cross multiply
    13,403.97x = 18,492.80 × 7,738.56
  4. Step 4: Simplify right side
    13,403.97x = 143,107,603.68
  5. Step 5: Solve for x
    x = 143,107,603.68/13,403.97
  6. Step 6: Final answer
    x = 10,676.51

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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.