Home / 39,078.92-53,928.72-21,173.92

Finding the Fourth Proportional to 39,078.92, 53,928.72 and 21,173.92

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Solution

The fourth proportional to 39,078.92, 53,928.72 and 21,173.92 is: 29,219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078.92 : 53,928.72 = 21,173.92 : x
  2. Step 2: Convert to fraction form
    39,078.92/53,928.72 = 21,173.92/x
  3. Step 3: Cross multiply
    39,078.92x = 53,928.72 × 21,173.92
  4. Step 4: Simplify right side
    39,078.92x = 1,141,882,408.98
  5. Step 5: Solve for x
    x = 1,141,882,408.98/39,078.92
  6. Step 6: Final answer
    x = 29,219.91

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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.