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Finding the Fourth Proportional to 28,696.68, 39,599.28 and 16,119

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Solution

The fourth proportional to 28,696.68, 39,599.28 and 16,119 is: 22,243.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,696.68 : 39,599.28 = 16,119 : x
  2. Step 2: Convert to fraction form
    28,696.68/39,599.28 = 16,119/x
  3. Step 3: Cross multiply
    28,696.68x = 39,599.28 × 16,119
  4. Step 4: Simplify right side
    28,696.68x = 638,300,794.32
  5. Step 5: Solve for x
    x = 638,300,794.32/28,696.68
  6. Step 6: Final answer
    x = 22,243.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.