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Finding the Fourth Proportional to 16,690.92, 25,036.92 and 7,921.32

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Solution

The fourth proportional to 16,690.92, 25,036.92 and 7,921.32 is: 11,882.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690.92 : 25,036.92 = 7,921.32 : x
  2. Step 2: Convert to fraction form
    16,690.92/25,036.92 = 7,921.32/x
  3. Step 3: Cross multiply
    16,690.92x = 25,036.92 × 7,921.32
  4. Step 4: Simplify right side
    16,690.92x = 198,325,455.13
  5. Step 5: Solve for x
    x = 198,325,455.13/16,690.92
  6. Step 6: Final answer
    x = 11,882.24

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1.5x scale

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.