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Finding the Fourth Proportional to 10,009.40, 15,009 and 3,343.50

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Solution

The fourth proportional to 10,009.40, 15,009 and 3,343.50 is: 5,013.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,009.40 : 15,009 = 3,343.50 : x
  2. Step 2: Convert to fraction form
    10,009.40/15,009 = 3,343.50/x
  3. Step 3: Cross multiply
    10,009.40x = 15,009 × 3,343.50
  4. Step 4: Simplify right side
    10,009.40x = 50,182,591.50
  5. Step 5: Solve for x
    x = 50,182,591.50/10,009.40
  6. Step 6: Final answer
    x = 5,013.55

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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.