Home / 18,651.11-25,733.43-12,979.49

Finding the Fourth Proportional to 18,651.11, 25,733.43 and 12,979.49

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Solution

The fourth proportional to 18,651.11, 25,733.43 and 12,979.49 is: 17,908.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.11 : 25,733.43 = 12,979.49 : x
  2. Step 2: Convert to fraction form
    18,651.11/25,733.43 = 12,979.49/x
  3. Step 3: Cross multiply
    18,651.11x = 25,733.43 × 12,979.49
  4. Step 4: Simplify right side
    18,651.11x = 334,006,668.68
  5. Step 5: Solve for x
    x = 334,006,668.68/18,651.11
  6. Step 6: Final answer
    x = 17,908.14

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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.