Home / 18,668.55-25,751.75-11,951.76

Finding the Fourth Proportional to 18,668.55, 25,751.75 and 11,951.76

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Solution

The fourth proportional to 18,668.55, 25,751.75 and 11,951.76 is: 16,486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.55 : 25,751.75 = 11,951.76 : x
  2. Step 2: Convert to fraction form
    18,668.55/25,751.75 = 11,951.76/x
  3. Step 3: Cross multiply
    18,668.55x = 25,751.75 × 11,951.76
  4. Step 4: Simplify right side
    18,668.55x = 307,778,675.82
  5. Step 5: Solve for x
    x = 307,778,675.82/18,668.55
  6. Step 6: Final answer
    x = 16,486.48

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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.