Home / 11,910.70-16,435.60-6,605.40

Finding the Fourth Proportional to 11,910.70, 16,435.60 and 6,605.40

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Solution

The fourth proportional to 11,910.70, 16,435.60 and 6,605.40 is: 9,114.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.70 : 16,435.60 = 6,605.40 : x
  2. Step 2: Convert to fraction form
    11,910.70/16,435.60 = 6,605.40/x
  3. Step 3: Cross multiply
    11,910.70x = 16,435.60 × 6,605.40
  4. Step 4: Simplify right side
    11,910.70x = 108,563,712.24
  5. Step 5: Solve for x
    x = 108,563,712.24/11,910.70
  6. Step 6: Final answer
    x = 9,114.81

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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.