Home / 39,591.96-54,636.84-21,687.72

Finding the Fourth Proportional to 39,591.96, 54,636.84 and 21,687.72

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Solution

The fourth proportional to 39,591.96, 54,636.84 and 21,687.72 is: 29,929.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,591.96 : 54,636.84 = 21,687.72 : x
  2. Step 2: Convert to fraction form
    39,591.96/54,636.84 = 21,687.72/x
  3. Step 3: Cross multiply
    39,591.96x = 54,636.84 × 21,687.72
  4. Step 4: Simplify right side
    39,591.96x = 1,184,948,487.60
  5. Step 5: Solve for x
    x = 1,184,948,487.60/39,591.96
  6. Step 6: Final answer
    x = 29,929.02

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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.