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Finding the Fourth Proportional to 18,628.13, 27,936.72 and 5,477.37

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Solution

The fourth proportional to 18,628.13, 27,936.72 and 5,477.37 is: 8,214.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.13 : 27,936.72 = 5,477.37 : x
  2. Step 2: Convert to fraction form
    18,628.13/27,936.72 = 5,477.37/x
  3. Step 3: Cross multiply
    18,628.13x = 27,936.72 × 5,477.37
  4. Step 4: Simplify right side
    18,628.13x = 153,019,752.03
  5. Step 5: Solve for x
    x = 153,019,752.03/18,628.13
  6. Step 6: Final answer
    x = 8,214.45

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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.