Home / 39,638.40-54,700.38-21,733.56

Finding the Fourth Proportional to 39,638.40, 54,700.38 and 21,733.56

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Solution

The fourth proportional to 39,638.40, 54,700.38 and 21,733.56 is: 29,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,638.40 : 54,700.38 = 21,733.56 : x
  2. Step 2: Convert to fraction form
    39,638.40/54,700.38 = 21,733.56/x
  3. Step 3: Cross multiply
    39,638.40x = 54,700.38 × 21,733.56
  4. Step 4: Simplify right side
    39,638.40x = 1,188,833,990.75
  5. Step 5: Solve for x
    x = 1,188,833,990.75/39,638.40
  6. Step 6: Final answer
    x = 29,991.98

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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.