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Finding the Fourth Proportional to 10,009, 15,013.50 and 2,713

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Solution

The fourth proportional to 10,009, 15,013.50 and 2,713 is: 4,069.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,009 : 15,013.50 = 2,713 : x
  2. Step 2: Convert to fraction form
    10,009/15,013.50 = 2,713/x
  3. Step 3: Cross multiply
    10,009x = 15,013.50 × 2,713
  4. Step 4: Simplify right side
    10,009x = 40,731,625.50
  5. Step 5: Solve for x
    x = 40,731,625.50/10,009
  6. Step 6: Final answer
    x = 4,069.50

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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.