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Finding the Fourth Proportional to 18,668.70, 25,787.46 and 13,833.26

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Solution

The fourth proportional to 18,668.70, 25,787.46 and 13,833.26 is: 19,108.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.70 : 25,787.46 = 13,833.26 : x
  2. Step 2: Convert to fraction form
    18,668.70/25,787.46 = 13,833.26/x
  3. Step 3: Cross multiply
    18,668.70x = 25,787.46 × 13,833.26
  4. Step 4: Simplify right side
    18,668.70x = 356,724,638.92
  5. Step 5: Solve for x
    x = 356,724,638.92/18,668.70
  6. Step 6: Final answer
    x = 19,108.17

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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.