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Finding the Fourth Proportional to 18,652.20, 27,971.78 and 5,501.08

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Solution

The fourth proportional to 18,652.20, 27,971.78 and 5,501.08 is: 8,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.20 : 27,971.78 = 5,501.08 : x
  2. Step 2: Convert to fraction form
    18,652.20/27,971.78 = 5,501.08/x
  3. Step 3: Cross multiply
    18,652.20x = 27,971.78 × 5,501.08
  4. Step 4: Simplify right side
    18,652.20x = 153,874,999.52
  5. Step 5: Solve for x
    x = 153,874,999.52/18,652.20
  6. Step 6: Final answer
    x = 8,249.70

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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.