Home / 19,972.80-27,571.32-12,902.67

Finding the Fourth Proportional to 19,972.80, 27,571.32 and 12,902.67

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Solution

The fourth proportional to 19,972.80, 27,571.32 and 12,902.67 is: 17,811.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.80 : 27,571.32 = 12,902.67 : x
  2. Step 2: Convert to fraction form
    19,972.80/27,571.32 = 12,902.67/x
  3. Step 3: Cross multiply
    19,972.80x = 27,571.32 × 12,902.67
  4. Step 4: Simplify right side
    19,972.80x = 355,743,643.42
  5. Step 5: Solve for x
    x = 355,743,643.42/19,972.80
  6. Step 6: Final answer
    x = 17,811.41

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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.