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Finding the Fourth Proportional to 22,362.21, 30,860.87 and 12,805.02

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Solution

The fourth proportional to 22,362.21, 30,860.87 and 12,805.02 is: 17,671.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,362.21 : 30,860.87 = 12,805.02 : x
  2. Step 2: Convert to fraction form
    22,362.21/30,860.87 = 12,805.02/x
  3. Step 3: Cross multiply
    22,362.21x = 30,860.87 × 12,805.02
  4. Step 4: Simplify right side
    22,362.21x = 395,173,993.54
  5. Step 5: Solve for x
    x = 395,173,993.54/22,362.21
  6. Step 6: Final answer
    x = 17,671.51

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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.