Home / 13,490.59-18,613.92-8,110.57

Finding the Fourth Proportional to 13,490.59, 18,613.92 and 8,110.57

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Solution

The fourth proportional to 13,490.59, 18,613.92 and 8,110.57 is: 11,190.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.59 : 18,613.92 = 8,110.57 : x
  2. Step 2: Convert to fraction form
    13,490.59/18,613.92 = 8,110.57/x
  3. Step 3: Cross multiply
    13,490.59x = 18,613.92 × 8,110.57
  4. Step 4: Simplify right side
    13,490.59x = 150,969,501.13
  5. Step 5: Solve for x
    x = 150,969,501.13/13,490.59
  6. Step 6: Final answer
    x = 11,190.73

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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.