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Finding the Fourth Proportional to 13,339.89, 20,009.43 and 5,548.50

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Solution

The fourth proportional to 13,339.89, 20,009.43 and 5,548.50 is: 8,322.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.89 : 20,009.43 = 5,548.50 : x
  2. Step 2: Convert to fraction form
    13,339.89/20,009.43 = 5,548.50/x
  3. Step 3: Cross multiply
    13,339.89x = 20,009.43 × 5,548.50
  4. Step 4: Simplify right side
    13,339.89x = 111,022,322.36
  5. Step 5: Solve for x
    x = 111,022,322.36/13,339.89
  6. Step 6: Final answer
    x = 8,322.58

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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.