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Finding the Fourth Proportional to 36,783.80, 55,182.90 and 15,723.80

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Solution

The fourth proportional to 36,783.80, 55,182.90 and 15,723.80 is: 23,588.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,783.80 : 55,182.90 = 15,723.80 : x
  2. Step 2: Convert to fraction form
    36,783.80/55,182.90 = 15,723.80/x
  3. Step 3: Cross multiply
    36,783.80x = 55,182.90 × 15,723.80
  4. Step 4: Simplify right side
    36,783.80x = 867,684,883.02
  5. Step 5: Solve for x
    x = 867,684,883.02/36,783.80
  6. Step 6: Final answer
    x = 23,588.78

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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.