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Finding the Fourth Proportional to 36,557.70, 54,836.55 and 20,811.30

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Solution

The fourth proportional to 36,557.70, 54,836.55 and 20,811.30 is: 31,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,557.70 : 54,836.55 = 20,811.30 : x
  2. Step 2: Convert to fraction form
    36,557.70/54,836.55 = 20,811.30/x
  3. Step 3: Cross multiply
    36,557.70x = 54,836.55 × 20,811.30
  4. Step 4: Simplify right side
    36,557.70x = 1,141,219,893.02
  5. Step 5: Solve for x
    x = 1,141,219,893.02/36,557.70
  6. Step 6: Final answer
    x = 31,216.95

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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.