Home / 18,778.59-25,920.97-11,613.99

Finding the Fourth Proportional to 18,778.59, 25,920.97 and 11,613.99

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Solution

The fourth proportional to 18,778.59, 25,920.97 and 11,613.99 is: 16,031.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.59 : 25,920.97 = 11,613.99 : x
  2. Step 2: Convert to fraction form
    18,778.59/25,920.97 = 11,613.99/x
  3. Step 3: Cross multiply
    18,778.59x = 25,920.97 × 11,613.99
  4. Step 4: Simplify right side
    18,778.59x = 301,045,886.37
  5. Step 5: Solve for x
    x = 301,045,886.37/18,778.59
  6. Step 6: Final answer
    x = 16,031.34

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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.