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Finding the Fourth Proportional to 39,592.53, 54,636.22 and 21,687.68

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Solution

The fourth proportional to 39,592.53, 54,636.22 and 21,687.68 is: 29,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,592.53 : 54,636.22 = 21,687.68 : x
  2. Step 2: Convert to fraction form
    39,592.53/54,636.22 = 21,687.68/x
  3. Step 3: Cross multiply
    39,592.53x = 54,636.22 × 21,687.68
  4. Step 4: Simplify right side
    39,592.53x = 1,184,933,019.47
  5. Step 5: Solve for x
    x = 1,184,933,019.47/39,592.53
  6. Step 6: Final answer
    x = 29,928.20

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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.