Home / 19,818.45-27,351.41-11,321.84

Finding the Fourth Proportional to 19,818.45, 27,351.41 and 11,321.84

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Solution

The fourth proportional to 19,818.45, 27,351.41 and 11,321.84 is: 15,625.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.45 : 27,351.41 = 11,321.84 : x
  2. Step 2: Convert to fraction form
    19,818.45/27,351.41 = 11,321.84/x
  3. Step 3: Cross multiply
    19,818.45x = 27,351.41 × 11,321.84
  4. Step 4: Simplify right side
    19,818.45x = 309,668,287.79
  5. Step 5: Solve for x
    x = 309,668,287.79/19,818.45
  6. Step 6: Final answer
    x = 15,625.25

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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.