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Finding the Fourth Proportional to 18,988, 26,203.44 and 10,604.50

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Solution

The fourth proportional to 18,988, 26,203.44 and 10,604.50 is: 14,634.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988 : 26,203.44 = 10,604.50 : x
  2. Step 2: Convert to fraction form
    18,988/26,203.44 = 10,604.50/x
  3. Step 3: Cross multiply
    18,988x = 26,203.44 × 10,604.50
  4. Step 4: Simplify right side
    18,988x = 277,874,379.48
  5. Step 5: Solve for x
    x = 277,874,379.48/18,988
  6. Step 6: Final answer
    x = 14,634.21

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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.