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Finding the Fourth Proportional to 28,405.03, 42,606 and 8,683.58

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Solution

The fourth proportional to 28,405.03, 42,606 and 8,683.58 is: 13,024.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.03 : 42,606 = 8,683.58 : x
  2. Step 2: Convert to fraction form
    28,405.03/42,606 = 8,683.58/x
  3. Step 3: Cross multiply
    28,405.03x = 42,606 × 8,683.58
  4. Step 4: Simplify right side
    28,405.03x = 369,972,609.48
  5. Step 5: Solve for x
    x = 369,972,609.48/28,405.03
  6. Step 6: Final answer
    x = 13,024.90

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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.