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Finding the Fourth Proportional to 19,200.85, 28,796.95 and 6,888.85

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Solution

The fourth proportional to 19,200.85, 28,796.95 and 6,888.85 is: 10,331.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.85 : 28,796.95 = 6,888.85 : x
  2. Step 2: Convert to fraction form
    19,200.85/28,796.95 = 6,888.85/x
  3. Step 3: Cross multiply
    19,200.85x = 28,796.95 × 6,888.85
  4. Step 4: Simplify right side
    19,200.85x = 198,377,805.63
  5. Step 5: Solve for x
    x = 198,377,805.63/19,200.85
  6. Step 6: Final answer
    x = 10,331.72

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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.