Home / 12,749.94-19,125.09-3,390.12

Finding the Fourth Proportional to 12,749.94, 19,125.09 and 3,390.12

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Solution

The fourth proportional to 12,749.94, 19,125.09 and 3,390.12 is: 5,085.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.94 : 19,125.09 = 3,390.12 : x
  2. Step 2: Convert to fraction form
    12,749.94/19,125.09 = 3,390.12/x
  3. Step 3: Cross multiply
    12,749.94x = 19,125.09 × 3,390.12
  4. Step 4: Simplify right side
    12,749.94x = 64,836,350.11
  5. Step 5: Solve for x
    x = 64,836,350.11/12,749.94
  6. Step 6: Final answer
    x = 5,085.23

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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.