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Finding the Fourth Proportional to 28,552.50, 42,846.03 and 11,911.86

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Solution

The fourth proportional to 28,552.50, 42,846.03 and 11,911.86 is: 17,875.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,552.50 : 42,846.03 = 11,911.86 : x
  2. Step 2: Convert to fraction form
    28,552.50/42,846.03 = 11,911.86/x
  3. Step 3: Cross multiply
    28,552.50x = 42,846.03 × 11,911.86
  4. Step 4: Simplify right side
    28,552.50x = 510,375,910.92
  5. Step 5: Solve for x
    x = 510,375,910.92/28,552.50
  6. Step 6: Final answer
    x = 17,875.00

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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.