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Finding the Fourth Proportional to 15,992.36, 22,069.54 and 8,919.08

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Solution

The fourth proportional to 15,992.36, 22,069.54 and 8,919.08 is: 12,308.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,992.36 : 22,069.54 = 8,919.08 : x
  2. Step 2: Convert to fraction form
    15,992.36/22,069.54 = 8,919.08/x
  3. Step 3: Cross multiply
    15,992.36x = 22,069.54 × 8,919.08
  4. Step 4: Simplify right side
    15,992.36x = 196,839,992.82
  5. Step 5: Solve for x
    x = 196,839,992.82/15,992.36
  6. Step 6: Final answer
    x = 12,308.38

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1.5x scale

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.