Home / 13,755.03-18,983.52-12,910.56

Finding the Fourth Proportional to 13,755.03, 18,983.52 and 12,910.56

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Solution

The fourth proportional to 13,755.03, 18,983.52 and 12,910.56 is: 17,818.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.03 : 18,983.52 = 12,910.56 : x
  2. Step 2: Convert to fraction form
    13,755.03/18,983.52 = 12,910.56/x
  3. Step 3: Cross multiply
    13,755.03x = 18,983.52 × 12,910.56
  4. Step 4: Simplify right side
    13,755.03x = 245,087,873.97
  5. Step 5: Solve for x
    x = 245,087,873.97/13,755.03
  6. Step 6: Final answer
    x = 17,818.05

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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.