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Finding the Fourth Proportional to 37,171.70, 55,739.10 and 13,478.30

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Solution

The fourth proportional to 37,171.70, 55,739.10 and 13,478.30 is: 20,210.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,171.70 : 55,739.10 = 13,478.30 : x
  2. Step 2: Convert to fraction form
    37,171.70/55,739.10 = 13,478.30/x
  3. Step 3: Cross multiply
    37,171.70x = 55,739.10 × 13,478.30
  4. Step 4: Simplify right side
    37,171.70x = 751,268,311.53
  5. Step 5: Solve for x
    x = 751,268,311.53/37,171.70
  6. Step 6: Final answer
    x = 20,210.76

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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.