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Finding the Fourth Proportional to 13,631.70, 19,110.30 and 13,631.70

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Solution

The fourth proportional to 13,631.70, 19,110.30 and 13,631.70 is: 19,110.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.70 : 19,110.30 = 13,631.70 : x
  2. Step 2: Convert to fraction form
    13,631.70/19,110.30 = 13,631.70/x
  3. Step 3: Cross multiply
    13,631.70x = 19,110.30 × 13,631.70
  4. Step 4: Simplify right side
    13,631.70x = 260,505,876.51
  5. Step 5: Solve for x
    x = 260,505,876.51/13,631.70
  6. Step 6: Final answer
    x = 19,110.30

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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.