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Finding the Fourth Proportional to 19,295.80, 28,944.29 and 6,645.42

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Solution

The fourth proportional to 19,295.80, 28,944.29 and 6,645.42 is: 9,968.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,295.80 : 28,944.29 = 6,645.42 : x
  2. Step 2: Convert to fraction form
    19,295.80/28,944.29 = 6,645.42/x
  3. Step 3: Cross multiply
    19,295.80x = 28,944.29 × 6,645.42
  4. Step 4: Simplify right side
    19,295.80x = 192,346,963.65
  5. Step 5: Solve for x
    x = 192,346,963.65/19,295.80
  6. Step 6: Final answer
    x = 9,968.33

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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.