Home / 21,091.54-29,104.15-12,137.29

Finding the Fourth Proportional to 21,091.54, 29,104.15 and 12,137.29

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Solution

The fourth proportional to 21,091.54, 29,104.15 and 12,137.29 is: 16,748.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.54 : 29,104.15 = 12,137.29 : x
  2. Step 2: Convert to fraction form
    21,091.54/29,104.15 = 12,137.29/x
  3. Step 3: Cross multiply
    21,091.54x = 29,104.15 × 12,137.29
  4. Step 4: Simplify right side
    21,091.54x = 353,245,508.75
  5. Step 5: Solve for x
    x = 353,245,508.75/21,091.54
  6. Step 6: Final answer
    x = 16,748.21

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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.