Home / 13,755.54-18,983.82-7,788.26

Finding the Fourth Proportional to 13,755.54, 18,983.82 and 7,788.26

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Solution

The fourth proportional to 13,755.54, 18,983.82 and 7,788.26 is: 10,748.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.54 : 18,983.82 = 7,788.26 : x
  2. Step 2: Convert to fraction form
    13,755.54/18,983.82 = 7,788.26/x
  3. Step 3: Cross multiply
    13,755.54x = 18,983.82 × 7,788.26
  4. Step 4: Simplify right side
    13,755.54x = 147,850,925.95
  5. Step 5: Solve for x
    x = 147,850,925.95/13,755.54
  6. Step 6: Final answer
    x = 10,748.46

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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.