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Finding the Fourth Proportional to 22,021, 30,388.98 and 12,085.64

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Solution

The fourth proportional to 22,021, 30,388.98 and 12,085.64 is: 16,678.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,021 : 30,388.98 = 12,085.64 : x
  2. Step 2: Convert to fraction form
    22,021/30,388.98 = 12,085.64/x
  3. Step 3: Cross multiply
    22,021x = 30,388.98 × 12,085.64
  4. Step 4: Simplify right side
    22,021x = 367,270,272.25
  5. Step 5: Solve for x
    x = 367,270,272.25/22,021
  6. Step 6: Final answer
    x = 16,678.18

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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.