Home / 19,883.79-27,440.23-11,388.65

Finding the Fourth Proportional to 19,883.79, 27,440.23 and 11,388.65

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Solution

The fourth proportional to 19,883.79, 27,440.23 and 11,388.65 is: 15,716.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,883.79 : 27,440.23 = 11,388.65 : x
  2. Step 2: Convert to fraction form
    19,883.79/27,440.23 = 11,388.65/x
  3. Step 3: Cross multiply
    19,883.79x = 27,440.23 × 11,388.65
  4. Step 4: Simplify right side
    19,883.79x = 312,507,215.52
  5. Step 5: Solve for x
    x = 312,507,215.52/19,883.79
  6. Step 6: Final answer
    x = 15,716.68

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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.