Home / 39,790.42-54,910.83-21,885.46

Finding the Fourth Proportional to 39,790.42, 54,910.83 and 21,885.46

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Solution

The fourth proportional to 39,790.42, 54,910.83 and 21,885.46 is: 30,201.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,790.42 : 54,910.83 = 21,885.46 : x
  2. Step 2: Convert to fraction form
    39,790.42/54,910.83 = 21,885.46/x
  3. Step 3: Cross multiply
    39,790.42x = 54,910.83 × 21,885.46
  4. Step 4: Simplify right side
    39,790.42x = 1,201,748,773.53
  5. Step 5: Solve for x
    x = 1,201,748,773.53/39,790.42
  6. Step 6: Final answer
    x = 30,201.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.