Home / 15,613.12-23,419.36-6,379.20

Finding the Fourth Proportional to 15,613.12, 23,419.36 and 6,379.20

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Solution

The fourth proportional to 15,613.12, 23,419.36 and 6,379.20 is: 9,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.12 : 23,419.36 = 6,379.20 : x
  2. Step 2: Convert to fraction form
    15,613.12/23,419.36 = 6,379.20/x
  3. Step 3: Cross multiply
    15,613.12x = 23,419.36 × 6,379.20
  4. Step 4: Simplify right side
    15,613.12x = 149,396,781.31
  5. Step 5: Solve for x
    x = 149,396,781.31/15,613.12
  6. Step 6: Final answer
    x = 9,568.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.