Home / 12,997.08-17,937.36-7,964.64

Finding the Fourth Proportional to 12,997.08, 17,937.36 and 7,964.64

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Solution

The fourth proportional to 12,997.08, 17,937.36 and 7,964.64 is: 10,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997.08 : 17,937.36 = 7,964.64 : x
  2. Step 2: Convert to fraction form
    12,997.08/17,937.36 = 7,964.64/x
  3. Step 3: Cross multiply
    12,997.08x = 17,937.36 × 7,964.64
  4. Step 4: Simplify right side
    12,997.08x = 142,864,614.95
  5. Step 5: Solve for x
    x = 142,864,614.95/12,997.08
  6. Step 6: Final answer
    x = 10,992.05

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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.