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Finding the Fourth Proportional to 13,191.54, 19,787.27 and 10,193.94

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Solution

The fourth proportional to 13,191.54, 19,787.27 and 10,193.94 is: 15,290.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.54 : 19,787.27 = 10,193.94 : x
  2. Step 2: Convert to fraction form
    13,191.54/19,787.27 = 10,193.94/x
  3. Step 3: Cross multiply
    13,191.54x = 19,787.27 × 10,193.94
  4. Step 4: Simplify right side
    13,191.54x = 201,710,243.14
  5. Step 5: Solve for x
    x = 201,710,243.14/13,191.54
  6. Step 6: Final answer
    x = 15,290.88

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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.