Home / 13,659.26-18,849.50-7,690.80

Finding the Fourth Proportional to 13,659.26, 18,849.50 and 7,690.80

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Solution

The fourth proportional to 13,659.26, 18,849.50 and 7,690.80 is: 10,613.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.26 : 18,849.50 = 7,690.80 : x
  2. Step 2: Convert to fraction form
    13,659.26/18,849.50 = 7,690.80/x
  3. Step 3: Cross multiply
    13,659.26x = 18,849.50 × 7,690.80
  4. Step 4: Simplify right side
    13,659.26x = 144,967,696.15
  5. Step 5: Solve for x
    x = 144,967,696.15/13,659.26
  6. Step 6: Final answer
    x = 10,613.15

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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.