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Finding the Fourth Proportional to 19,107.80, 28,664.40 and 5,958.80

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Solution

The fourth proportional to 19,107.80, 28,664.40 and 5,958.80 is: 8,939.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,107.80 : 28,664.40 = 5,958.80 : x
  2. Step 2: Convert to fraction form
    19,107.80/28,664.40 = 5,958.80/x
  3. Step 3: Cross multiply
    19,107.80x = 28,664.40 × 5,958.80
  4. Step 4: Simplify right side
    19,107.80x = 170,805,426.72
  5. Step 5: Solve for x
    x = 170,805,426.72/19,107.80
  6. Step 6: Final answer
    x = 8,939.04

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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.