Home / 39,591.92-54,636.86-21,687.21

Finding the Fourth Proportional to 39,591.92, 54,636.86 and 21,687.21

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Solution

The fourth proportional to 39,591.92, 54,636.86 and 21,687.21 is: 29,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,591.92 : 54,636.86 = 21,687.21 : x
  2. Step 2: Convert to fraction form
    39,591.92/54,636.86 = 21,687.21/x
  3. Step 3: Cross multiply
    39,591.92x = 54,636.86 × 21,687.21
  4. Step 4: Simplify right side
    39,591.92x = 1,184,920,948.12
  5. Step 5: Solve for x
    x = 1,184,920,948.12/39,591.92
  6. Step 6: Final answer
    x = 29,928.36

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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.