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Finding the Fourth Proportional to 22,345.78, 30,837.21 and 12,274.89

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Solution

The fourth proportional to 22,345.78, 30,837.21 and 12,274.89 is: 16,939.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,345.78 : 30,837.21 = 12,274.89 : x
  2. Step 2: Convert to fraction form
    22,345.78/30,837.21 = 12,274.89/x
  3. Step 3: Cross multiply
    22,345.78x = 30,837.21 × 12,274.89
  4. Step 4: Simplify right side
    22,345.78x = 378,523,360.66
  5. Step 5: Solve for x
    x = 378,523,360.66/22,345.78
  6. Step 6: Final answer
    x = 16,939.37

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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.