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Finding the Fourth Proportional to 37,276.80, 55,931.40 and 18,808.80

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Solution

The fourth proportional to 37,276.80, 55,931.40 and 18,808.80 is: 28,221.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,276.80 : 55,931.40 = 18,808.80 : x
  2. Step 2: Convert to fraction form
    37,276.80/55,931.40 = 18,808.80/x
  3. Step 3: Cross multiply
    37,276.80x = 55,931.40 × 18,808.80
  4. Step 4: Simplify right side
    37,276.80x = 1,052,002,516.32
  5. Step 5: Solve for x
    x = 1,052,002,516.32/37,276.80
  6. Step 6: Final answer
    x = 28,221.37

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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.