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Finding the Fourth Proportional to 13,673.06, 20,509.60 and 4,439.06

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Solution

The fourth proportional to 13,673.06, 20,509.60 and 4,439.06 is: 6,658.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.06 : 20,509.60 = 4,439.06 : x
  2. Step 2: Convert to fraction form
    13,673.06/20,509.60 = 4,439.06/x
  3. Step 3: Cross multiply
    13,673.06x = 20,509.60 × 4,439.06
  4. Step 4: Simplify right side
    13,673.06x = 91,043,385.15
  5. Step 5: Solve for x
    x = 91,043,385.15/13,673.06
  6. Step 6: Final answer
    x = 6,658.59

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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.