Home / 11,905.90-16,431.32-6,601.74

Finding the Fourth Proportional to 11,905.90, 16,431.32 and 6,601.74

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Solution

The fourth proportional to 11,905.90, 16,431.32 and 6,601.74 is: 9,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.90 : 16,431.32 = 6,601.74 : x
  2. Step 2: Convert to fraction form
    11,905.90/16,431.32 = 6,601.74/x
  3. Step 3: Cross multiply
    11,905.90x = 16,431.32 × 6,601.74
  4. Step 4: Simplify right side
    11,905.90x = 108,475,302.50
  5. Step 5: Solve for x
    x = 108,475,302.50/11,905.90
  6. Step 6: Final answer
    x = 9,111.05

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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.