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Finding the Fourth Proportional to 13,997.70, 19,622.70 and 13,997.70

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Solution

The fourth proportional to 13,997.70, 19,622.70 and 13,997.70 is: 19,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.70 : 19,622.70 = 13,997.70 : x
  2. Step 2: Convert to fraction form
    13,997.70/19,622.70 = 13,997.70/x
  3. Step 3: Cross multiply
    13,997.70x = 19,622.70 × 13,997.70
  4. Step 4: Simplify right side
    13,997.70x = 274,672,667.79
  5. Step 5: Solve for x
    x = 274,672,667.79/13,997.70
  6. Step 6: Final answer
    x = 19,622.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.