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Finding the Fourth Proportional to 19,251.42, 28,868.49 and 8,857.50

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Solution

The fourth proportional to 19,251.42, 28,868.49 and 8,857.50 is: 13,282.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.42 : 28,868.49 = 8,857.50 : x
  2. Step 2: Convert to fraction form
    19,251.42/28,868.49 = 8,857.50/x
  3. Step 3: Cross multiply
    19,251.42x = 28,868.49 × 8,857.50
  4. Step 4: Simplify right side
    19,251.42x = 255,702,650.18
  5. Step 5: Solve for x
    x = 255,702,650.18/19,251.42
  6. Step 6: Final answer
    x = 13,282.27

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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.