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Finding the Fourth Proportional to 18,360, 27,539.93 and 5,212.37

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Solution

The fourth proportional to 18,360, 27,539.93 and 5,212.37 is: 7,818.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360 : 27,539.93 = 5,212.37 : x
  2. Step 2: Convert to fraction form
    18,360/27,539.93 = 5,212.37/x
  3. Step 3: Cross multiply
    18,360x = 27,539.93 × 5,212.37
  4. Step 4: Simplify right side
    18,360x = 143,548,386.81
  5. Step 5: Solve for x
    x = 143,548,386.81/18,360
  6. Step 6: Final answer
    x = 7,818.54

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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.