Home / 21,154.34-31,745.86-8,676.63

Finding the Fourth Proportional to 21,154.34, 31,745.86 and 8,676.63

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Solution

The fourth proportional to 21,154.34, 31,745.86 and 8,676.63 is: 13,020.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.34 : 31,745.86 = 8,676.63 : x
  2. Step 2: Convert to fraction form
    21,154.34/31,745.86 = 8,676.63/x
  3. Step 3: Cross multiply
    21,154.34x = 31,745.86 × 8,676.63
  4. Step 4: Simplify right side
    21,154.34x = 275,447,059.56
  5. Step 5: Solve for x
    x = 275,447,059.56/21,154.34
  6. Step 6: Final answer
    x = 13,020.83

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1.5x scale

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.