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Finding the Fourth Proportional to 28,555.27, 42,835.07 and 8,835.82

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Solution

The fourth proportional to 28,555.27, 42,835.07 and 8,835.82 is: 13,254.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.27 : 42,835.07 = 8,835.82 : x
  2. Step 2: Convert to fraction form
    28,555.27/42,835.07 = 8,835.82/x
  3. Step 3: Cross multiply
    28,555.27x = 42,835.07 × 8,835.82
  4. Step 4: Simplify right side
    28,555.27x = 378,482,816.94
  5. Step 5: Solve for x
    x = 378,482,816.94/28,555.27
  6. Step 6: Final answer
    x = 13,254.40

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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.