Home / 21,615.03-29,829.57-12,183.39

Finding the Fourth Proportional to 21,615.03, 29,829.57 and 12,183.39

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Solution

The fourth proportional to 21,615.03, 29,829.57 and 12,183.39 is: 16,813.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.03 : 29,829.57 = 12,183.39 : x
  2. Step 2: Convert to fraction form
    21,615.03/29,829.57 = 12,183.39/x
  3. Step 3: Cross multiply
    21,615.03x = 29,829.57 × 12,183.39
  4. Step 4: Simplify right side
    21,615.03x = 363,425,284.84
  5. Step 5: Solve for x
    x = 363,425,284.84/21,615.03
  6. Step 6: Final answer
    x = 16,813.55

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1.5x scale

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.