Home / 10,114.60-13,958.20-5,638.43

Finding the Fourth Proportional to 10,114.60, 13,958.20 and 5,638.43

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Solution

The fourth proportional to 10,114.60, 13,958.20 and 5,638.43 is: 7,781.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,114.60 : 13,958.20 = 5,638.43 : x
  2. Step 2: Convert to fraction form
    10,114.60/13,958.20 = 5,638.43/x
  3. Step 3: Cross multiply
    10,114.60x = 13,958.20 × 5,638.43
  4. Step 4: Simplify right side
    10,114.60x = 78,702,249.74
  5. Step 5: Solve for x
    x = 78,702,249.74/10,114.60
  6. Step 6: Final answer
    x = 7,781.06

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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.