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Finding the Fourth Proportional to 28,495.17, 42,696.06 and 9,765.12

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Solution

The fourth proportional to 28,495.17, 42,696.06 and 9,765.12 is: 14,631.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.17 : 42,696.06 = 9,765.12 : x
  2. Step 2: Convert to fraction form
    28,495.17/42,696.06 = 9,765.12/x
  3. Step 3: Cross multiply
    28,495.17x = 42,696.06 × 9,765.12
  4. Step 4: Simplify right side
    28,495.17x = 416,932,149.43
  5. Step 5: Solve for x
    x = 416,932,149.43/28,495.17
  6. Step 6: Final answer
    x = 14,631.68

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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.