Home / 39,591.72-54,636.60-21,687.03

Finding the Fourth Proportional to 39,591.72, 54,636.60 and 21,687.03

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Solution

The fourth proportional to 39,591.72, 54,636.60 and 21,687.03 is: 29,928.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,591.72 : 54,636.60 = 21,687.03 : x
  2. Step 2: Convert to fraction form
    39,591.72/54,636.60 = 21,687.03/x
  3. Step 3: Cross multiply
    39,591.72x = 54,636.60 × 21,687.03
  4. Step 4: Simplify right side
    39,591.72x = 1,184,905,583.30
  5. Step 5: Solve for x
    x = 1,184,905,583.30/39,591.72
  6. Step 6: Final answer
    x = 29,928.12

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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.