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Finding the Fourth Proportional to 19,620.70, 27,076.62 and 10,668.22

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Solution

The fourth proportional to 19,620.70, 27,076.62 and 10,668.22 is: 14,722.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.70 : 27,076.62 = 10,668.22 : x
  2. Step 2: Convert to fraction form
    19,620.70/27,076.62 = 10,668.22/x
  3. Step 3: Cross multiply
    19,620.70x = 27,076.62 × 10,668.22
  4. Step 4: Simplify right side
    19,620.70x = 288,859,339.02
  5. Step 5: Solve for x
    x = 288,859,339.02/19,620.70
  6. Step 6: Final answer
    x = 14,722.17

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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.