Home / 13,319.35-18,380.08-7,650.11

Finding the Fourth Proportional to 13,319.35, 18,380.08 and 7,650.11

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Solution

The fourth proportional to 13,319.35, 18,380.08 and 7,650.11 is: 10,556.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.35 : 18,380.08 = 7,650.11 : x
  2. Step 2: Convert to fraction form
    13,319.35/18,380.08 = 7,650.11/x
  3. Step 3: Cross multiply
    13,319.35x = 18,380.08 × 7,650.11
  4. Step 4: Simplify right side
    13,319.35x = 140,609,633.81
  5. Step 5: Solve for x
    x = 140,609,633.81/13,319.35
  6. Step 6: Final answer
    x = 10,556.79

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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.