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Finding the Fourth Proportional to 19,257.52, 28,875.84 and 8,860

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Solution

The fourth proportional to 19,257.52, 28,875.84 and 8,860 is: 13,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,257.52 : 28,875.84 = 8,860 : x
  2. Step 2: Convert to fraction form
    19,257.52/28,875.84 = 8,860/x
  3. Step 3: Cross multiply
    19,257.52x = 28,875.84 × 8,860
  4. Step 4: Simplify right side
    19,257.52x = 255,839,942.40
  5. Step 5: Solve for x
    x = 255,839,942.40/19,257.52
  6. Step 6: Final answer
    x = 13,285.20

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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.