Home / 12,749.70-19,121.68-4,849.40

Finding the Fourth Proportional to 12,749.70, 19,121.68 and 4,849.40

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Solution

The fourth proportional to 12,749.70, 19,121.68 and 4,849.40 is: 7,273.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.70 : 19,121.68 = 4,849.40 : x
  2. Step 2: Convert to fraction form
    12,749.70/19,121.68 = 4,849.40/x
  3. Step 3: Cross multiply
    12,749.70x = 19,121.68 × 4,849.40
  4. Step 4: Simplify right side
    12,749.70x = 92,728,674.99
  5. Step 5: Solve for x
    x = 92,728,674.99/12,749.70
  6. Step 6: Final answer
    x = 7,273.01

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1.5x scale

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.