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Finding the Fourth Proportional to 14,490.78, 21,738.60 and 6,174.78

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Solution

The fourth proportional to 14,490.78, 21,738.60 and 6,174.78 is: 9,263.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.78 : 21,738.60 = 6,174.78 : x
  2. Step 2: Convert to fraction form
    14,490.78/21,738.60 = 6,174.78/x
  3. Step 3: Cross multiply
    14,490.78x = 21,738.60 × 6,174.78
  4. Step 4: Simplify right side
    14,490.78x = 134,231,072.51
  5. Step 5: Solve for x
    x = 134,231,072.51/14,490.78
  6. Step 6: Final answer
    x = 9,263.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.