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Finding the Fourth Proportional to 16,690, 25,025.28 and 7,329.64

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Solution

The fourth proportional to 16,690, 25,025.28 and 7,329.64 is: 10,990.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690 : 25,025.28 = 7,329.64 : x
  2. Step 2: Convert to fraction form
    16,690/25,025.28 = 7,329.64/x
  3. Step 3: Cross multiply
    16,690x = 25,025.28 × 7,329.64
  4. Step 4: Simplify right side
    16,690x = 183,426,293.30
  5. Step 5: Solve for x
    x = 183,426,293.30/16,690
  6. Step 6: Final answer
    x = 10,990.19

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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.