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Finding the Fourth Proportional to 15,550.94, 21,460.39 and 8,477.36

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Solution

The fourth proportional to 15,550.94, 21,460.39 and 8,477.36 is: 11,698.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.94 : 21,460.39 = 8,477.36 : x
  2. Step 2: Convert to fraction form
    15,550.94/21,460.39 = 8,477.36/x
  3. Step 3: Cross multiply
    15,550.94x = 21,460.39 × 8,477.36
  4. Step 4: Simplify right side
    15,550.94x = 181,927,451.44
  5. Step 5: Solve for x
    x = 181,927,451.44/15,550.94
  6. Step 6: Final answer
    x = 11,698.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.