Home / 10,142.54-13,983.96-7,755.44

Finding the Fourth Proportional to 10,142.54, 13,983.96 and 7,755.44

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Solution

The fourth proportional to 10,142.54, 13,983.96 and 7,755.44 is: 10,692.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.54 : 13,983.96 = 7,755.44 : x
  2. Step 2: Convert to fraction form
    10,142.54/13,983.96 = 7,755.44/x
  3. Step 3: Cross multiply
    10,142.54x = 13,983.96 × 7,755.44
  4. Step 4: Simplify right side
    10,142.54x = 108,451,762.74
  5. Step 5: Solve for x
    x = 108,451,762.74/10,142.54
  6. Step 6: Final answer
    x = 10,692.76

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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.