Home / 15,118.26-20,861.70-8,403.23

Finding the Fourth Proportional to 15,118.26, 20,861.70 and 8,403.23

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Solution

The fourth proportional to 15,118.26, 20,861.70 and 8,403.23 is: 11,595.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,118.26 : 20,861.70 = 8,403.23 : x
  2. Step 2: Convert to fraction form
    15,118.26/20,861.70 = 8,403.23/x
  3. Step 3: Cross multiply
    15,118.26x = 20,861.70 × 8,403.23
  4. Step 4: Simplify right side
    15,118.26x = 175,305,613.85
  5. Step 5: Solve for x
    x = 175,305,613.85/15,118.26
  6. Step 6: Final answer
    x = 11,595.62

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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.