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Finding the Fourth Proportional to 18,959.37, 28,439.06 and 6,473.12

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Solution

The fourth proportional to 18,959.37, 28,439.06 and 6,473.12 is: 9,709.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959.37 : 28,439.06 = 6,473.12 : x
  2. Step 2: Convert to fraction form
    18,959.37/28,439.06 = 6,473.12/x
  3. Step 3: Cross multiply
    18,959.37x = 28,439.06 × 6,473.12
  4. Step 4: Simplify right side
    18,959.37x = 184,089,415.70
  5. Step 5: Solve for x
    x = 184,089,415.70/18,959.37
  6. Step 6: Final answer
    x = 9,709.68

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Similar ratio
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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.