Home / 10,665.36-16,000.31-4,091.49

Finding the Fourth Proportional to 10,665.36, 16,000.31 and 4,091.49

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Solution

The fourth proportional to 10,665.36, 16,000.31 and 4,091.49 is: 6,138.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,665.36 : 16,000.31 = 4,091.49 : x
  2. Step 2: Convert to fraction form
    10,665.36/16,000.31 = 4,091.49/x
  3. Step 3: Cross multiply
    10,665.36x = 16,000.31 × 4,091.49
  4. Step 4: Simplify right side
    10,665.36x = 65,465,118.59
  5. Step 5: Solve for x
    x = 65,465,118.59/10,665.36
  6. Step 6: Final answer
    x = 6,138.11

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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.