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Finding the Fourth Proportional to 13,997.30, 20,995.97 and 13,141.94

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Solution

The fourth proportional to 13,997.30, 20,995.97 and 13,141.94 is: 19,712.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.30 : 20,995.97 = 13,141.94 : x
  2. Step 2: Convert to fraction form
    13,997.30/20,995.97 = 13,141.94/x
  3. Step 3: Cross multiply
    13,997.30x = 20,995.97 × 13,141.94
  4. Step 4: Simplify right side
    13,997.30x = 275,927,607.29
  5. Step 5: Solve for x
    x = 275,927,607.29/13,997.30
  6. Step 6: Final answer
    x = 19,712.92

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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.