Home / 39,773.30-54,887.29-21,869.43

Finding the Fourth Proportional to 39,773.30, 54,887.29 and 21,869.43

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Solution

The fourth proportional to 39,773.30, 54,887.29 and 21,869.43 is: 30,179.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,773.30 : 54,887.29 = 21,869.43 : x
  2. Step 2: Convert to fraction form
    39,773.30/54,887.29 = 21,869.43/x
  3. Step 3: Cross multiply
    39,773.30x = 54,887.29 × 21,869.43
  4. Step 4: Simplify right side
    39,773.30x = 1,200,353,486.04
  5. Step 5: Solve for x
    x = 1,200,353,486.04/39,773.30
  6. Step 6: Final answer
    x = 30,179.89

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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.