Home / 21,969.64-30,316.64-13,584.52

Finding the Fourth Proportional to 21,969.64, 30,316.64 and 13,584.52

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Solution

The fourth proportional to 21,969.64, 30,316.64 and 13,584.52 is: 18,745.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.64 : 30,316.64 = 13,584.52 : x
  2. Step 2: Convert to fraction form
    21,969.64/30,316.64 = 13,584.52/x
  3. Step 3: Cross multiply
    21,969.64x = 30,316.64 × 13,584.52
  4. Step 4: Simplify right side
    21,969.64x = 411,837,002.41
  5. Step 5: Solve for x
    x = 411,837,002.41/21,969.64
  6. Step 6: Final answer
    x = 18,745.73

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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.