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Finding the Fourth Proportional to 36,990.52, 55,485.80 and 12,366.52

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Solution

The fourth proportional to 36,990.52, 55,485.80 and 12,366.52 is: 18,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,990.52 : 55,485.80 = 12,366.52 : x
  2. Step 2: Convert to fraction form
    36,990.52/55,485.80 = 12,366.52/x
  3. Step 3: Cross multiply
    36,990.52x = 55,485.80 × 12,366.52
  4. Step 4: Simplify right side
    36,990.52x = 686,166,255.42
  5. Step 5: Solve for x
    x = 686,166,255.42/36,990.52
  6. Step 6: Final answer
    x = 18,549.79

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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.