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Finding the Fourth Proportional to 18,060.48, 27,090.72 and 8,820

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Solution

The fourth proportional to 18,060.48, 27,090.72 and 8,820 is: 13,230

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,060.48 : 27,090.72 = 8,820 : x
  2. Step 2: Convert to fraction form
    18,060.48/27,090.72 = 8,820/x
  3. Step 3: Cross multiply
    18,060.48x = 27,090.72 × 8,820
  4. Step 4: Simplify right side
    18,060.48x = 238,940,150.40
  5. Step 5: Solve for x
    x = 238,940,150.40/18,060.48
  6. Step 6: Final answer
    x = 13,230

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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.