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Finding the Fourth Proportional to 19,111.50, 28,668.33 and 6,799.50

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Solution

The fourth proportional to 19,111.50, 28,668.33 and 6,799.50 is: 10,199.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.50 : 28,668.33 = 6,799.50 : x
  2. Step 2: Convert to fraction form
    19,111.50/28,668.33 = 6,799.50/x
  3. Step 3: Cross multiply
    19,111.50x = 28,668.33 × 6,799.50
  4. Step 4: Simplify right side
    19,111.50x = 194,930,309.84
  5. Step 5: Solve for x
    x = 194,930,309.84/19,111.50
  6. Step 6: Final answer
    x = 10,199.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.