Home / 15,447.58-21,317.81-8,374.01

Finding the Fourth Proportional to 15,447.58, 21,317.81 and 8,374.01

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Solution

The fourth proportional to 15,447.58, 21,317.81 and 8,374.01 is: 11,556.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.58 : 21,317.81 = 8,374.01 : x
  2. Step 2: Convert to fraction form
    15,447.58/21,317.81 = 8,374.01/x
  3. Step 3: Cross multiply
    15,447.58x = 21,317.81 × 8,374.01
  4. Step 4: Simplify right side
    15,447.58x = 178,515,405.66
  5. Step 5: Solve for x
    x = 178,515,405.66/15,447.58
  6. Step 6: Final answer
    x = 11,556.21

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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.