Home / 13,613.09-18,786.63-7,946.96

Finding the Fourth Proportional to 13,613.09, 18,786.63 and 7,946.96

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Solution

The fourth proportional to 13,613.09, 18,786.63 and 7,946.96 is: 10,967.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.09 : 18,786.63 = 7,946.96 : x
  2. Step 2: Convert to fraction form
    13,613.09/18,786.63 = 7,946.96/x
  3. Step 3: Cross multiply
    13,613.09x = 18,786.63 × 7,946.96
  4. Step 4: Simplify right side
    13,613.09x = 149,296,597.14
  5. Step 5: Solve for x
    x = 149,296,597.14/13,613.09
  6. Step 6: Final answer
    x = 10,967.14

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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.