Home / 19,778.06-27,274.29-18,137.07

Finding the Fourth Proportional to 19,778.06, 27,274.29 and 18,137.07

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Solution

The fourth proportional to 19,778.06, 27,274.29 and 18,137.07 is: 25,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.06 : 27,274.29 = 18,137.07 : x
  2. Step 2: Convert to fraction form
    19,778.06/27,274.29 = 18,137.07/x
  3. Step 3: Cross multiply
    19,778.06x = 27,274.29 × 18,137.07
  4. Step 4: Simplify right side
    19,778.06x = 494,675,706.93
  5. Step 5: Solve for x
    x = 494,675,706.93/19,778.06
  6. Step 6: Final answer
    x = 25,011.34

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Half scale
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Double scale
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Similar ratio
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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.