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Finding the Fourth Proportional to 16,690.05, 25,004.70 and 7,905.60

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Solution

The fourth proportional to 16,690.05, 25,004.70 and 7,905.60 is: 11,844.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690.05 : 25,004.70 = 7,905.60 : x
  2. Step 2: Convert to fraction form
    16,690.05/25,004.70 = 7,905.60/x
  3. Step 3: Cross multiply
    16,690.05x = 25,004.70 × 7,905.60
  4. Step 4: Simplify right side
    16,690.05x = 197,677,156.32
  5. Step 5: Solve for x
    x = 197,677,156.32/16,690.05
  6. Step 6: Final answer
    x = 11,844.01

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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.