Home / 21,383.22-29,508.67-12,310.36

Finding the Fourth Proportional to 21,383.22, 29,508.67 and 12,310.36

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Solution

The fourth proportional to 21,383.22, 29,508.67 and 12,310.36 is: 16,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.22 : 29,508.67 = 12,310.36 : x
  2. Step 2: Convert to fraction form
    21,383.22/29,508.67 = 12,310.36/x
  3. Step 3: Cross multiply
    21,383.22x = 29,508.67 × 12,310.36
  4. Step 4: Simplify right side
    21,383.22x = 363,262,344.24
  5. Step 5: Solve for x
    x = 363,262,344.24/21,383.22
  6. Step 6: Final answer
    x = 16,988.20

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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.