Home / 19,981.40-27,573.78-11,028.25

Finding the Fourth Proportional to 19,981.40, 27,573.78 and 11,028.25

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Solution

The fourth proportional to 19,981.40, 27,573.78 and 11,028.25 is: 15,218.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.40 : 27,573.78 = 11,028.25 : x
  2. Step 2: Convert to fraction form
    19,981.40/27,573.78 = 11,028.25/x
  3. Step 3: Cross multiply
    19,981.40x = 27,573.78 × 11,028.25
  4. Step 4: Simplify right side
    19,981.40x = 304,090,470.35
  5. Step 5: Solve for x
    x = 304,090,470.35/19,981.40
  6. Step 6: Final answer
    x = 15,218.67

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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.