Home / 13,208.96-18,228.58-7,904

Finding the Fourth Proportional to 13,208.96, 18,228.58 and 7,904

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Solution

The fourth proportional to 13,208.96, 18,228.58 and 7,904 is: 10,907.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.96 : 18,228.58 = 7,904 : x
  2. Step 2: Convert to fraction form
    13,208.96/18,228.58 = 7,904/x
  3. Step 3: Cross multiply
    13,208.96x = 18,228.58 × 7,904
  4. Step 4: Simplify right side
    13,208.96x = 144,078,696.32
  5. Step 5: Solve for x
    x = 144,078,696.32/13,208.96
  6. Step 6: Final answer
    x = 10,907.65

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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.