Home / 19,921.75-27,494.64-12,868.67

Finding the Fourth Proportional to 19,921.75, 27,494.64 and 12,868.67

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Solution

The fourth proportional to 19,921.75, 27,494.64 and 12,868.67 is: 17,760.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.75 : 27,494.64 = 12,868.67 : x
  2. Step 2: Convert to fraction form
    19,921.75/27,494.64 = 12,868.67/x
  3. Step 3: Cross multiply
    19,921.75x = 27,494.64 × 12,868.67
  4. Step 4: Simplify right side
    19,921.75x = 353,819,517.67
  5. Step 5: Solve for x
    x = 353,819,517.67/19,921.75
  6. Step 6: Final answer
    x = 17,760.47

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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.