Home / 13,983.75-20,979.68-4,749.75

Finding the Fourth Proportional to 13,983.75, 20,979.68 and 4,749.75

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Solution

The fourth proportional to 13,983.75, 20,979.68 and 4,749.75 is: 7,126.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,983.75 : 20,979.68 = 4,749.75 : x
  2. Step 2: Convert to fraction form
    13,983.75/20,979.68 = 4,749.75/x
  3. Step 3: Cross multiply
    13,983.75x = 20,979.68 × 4,749.75
  4. Step 4: Simplify right side
    13,983.75x = 99,648,235.08
  5. Step 5: Solve for x
    x = 99,648,235.08/13,983.75
  6. Step 6: Final answer
    x = 7,126.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.