Home / 14,268.78-21,405.47-4,405.75

Finding the Fourth Proportional to 14,268.78, 21,405.47 and 4,405.75

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Solution

The fourth proportional to 14,268.78, 21,405.47 and 4,405.75 is: 6,609.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,268.78 : 21,405.47 = 4,405.75 : x
  2. Step 2: Convert to fraction form
    14,268.78/21,405.47 = 4,405.75/x
  3. Step 3: Cross multiply
    14,268.78x = 21,405.47 × 4,405.75
  4. Step 4: Simplify right side
    14,268.78x = 94,307,073.91
  5. Step 5: Solve for x
    x = 94,307,073.91/14,268.78
  6. Step 6: Final answer
    x = 6,609.33

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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.