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Finding the Fourth Proportional to 28,476.59, 42,707.50 and 8,481.41

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Solution

The fourth proportional to 28,476.59, 42,707.50 and 8,481.41 is: 12,719.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.59 : 42,707.50 = 8,481.41 : x
  2. Step 2: Convert to fraction form
    28,476.59/42,707.50 = 8,481.41/x
  3. Step 3: Cross multiply
    28,476.59x = 42,707.50 × 8,481.41
  4. Step 4: Simplify right side
    28,476.59x = 362,219,817.58
  5. Step 5: Solve for x
    x = 362,219,817.58/28,476.59
  6. Step 6: Final answer
    x = 12,719.92

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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.