Home / 18,717.91-25,841.09-12,758.33

Finding the Fourth Proportional to 18,717.91, 25,841.09 and 12,758.33

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Solution

The fourth proportional to 18,717.91, 25,841.09 and 12,758.33 is: 17,613.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.91 : 25,841.09 = 12,758.33 : x
  2. Step 2: Convert to fraction form
    18,717.91/25,841.09 = 12,758.33/x
  3. Step 3: Cross multiply
    18,717.91x = 25,841.09 × 12,758.33
  4. Step 4: Simplify right side
    18,717.91x = 329,689,250.28
  5. Step 5: Solve for x
    x = 329,689,250.28/18,717.91
  6. Step 6: Final answer
    x = 17,613.57

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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.