Home / 36,771.78-55,156.44-20,139.66

Finding the Fourth Proportional to 36,771.78, 55,156.44 and 20,139.66

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Solution

The fourth proportional to 36,771.78, 55,156.44 and 20,139.66 is: 30,208.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,771.78 : 55,156.44 = 20,139.66 : x
  2. Step 2: Convert to fraction form
    36,771.78/55,156.44 = 20,139.66/x
  3. Step 3: Cross multiply
    36,771.78x = 55,156.44 × 20,139.66
  4. Step 4: Simplify right side
    36,771.78x = 1,110,831,948.41
  5. Step 5: Solve for x
    x = 1,110,831,948.41/36,771.78
  6. Step 6: Final answer
    x = 30,208.82

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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.