Home / 13,613.51-18,786.57-7,952.15

Finding the Fourth Proportional to 13,613.51, 18,786.57 and 7,952.15

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Solution

The fourth proportional to 13,613.51, 18,786.57 and 7,952.15 is: 10,973.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.51 : 18,786.57 = 7,952.15 : x
  2. Step 2: Convert to fraction form
    13,613.51/18,786.57 = 7,952.15/x
  3. Step 3: Cross multiply
    13,613.51x = 18,786.57 × 7,952.15
  4. Step 4: Simplify right side
    13,613.51x = 149,393,528.69
  5. Step 5: Solve for x
    x = 149,393,528.69/13,613.51
  6. Step 6: Final answer
    x = 10,973.92

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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.