Home / 11,165.21-16,732.17-8,390.11

Finding the Fourth Proportional to 11,165.21, 16,732.17 and 8,390.11

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Solution

The fourth proportional to 11,165.21, 16,732.17 and 8,390.11 is: 12,573.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.21 : 16,732.17 = 8,390.11 : x
  2. Step 2: Convert to fraction form
    11,165.21/16,732.17 = 8,390.11/x
  3. Step 3: Cross multiply
    11,165.21x = 16,732.17 × 8,390.11
  4. Step 4: Simplify right side
    11,165.21x = 140,384,746.84
  5. Step 5: Solve for x
    x = 140,384,746.84/11,165.21
  6. Step 6: Final answer
    x = 12,573.41

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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.