Home / 11,129.37-16,688.67-4,112.68

Finding the Fourth Proportional to 11,129.37, 16,688.67 and 4,112.68

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Solution

The fourth proportional to 11,129.37, 16,688.67 and 4,112.68 is: 6,167.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.37 : 16,688.67 = 4,112.68 : x
  2. Step 2: Convert to fraction form
    11,129.37/16,688.67 = 4,112.68/x
  3. Step 3: Cross multiply
    11,129.37x = 16,688.67 × 4,112.68
  4. Step 4: Simplify right side
    11,129.37x = 68,635,159.34
  5. Step 5: Solve for x
    x = 68,635,159.34/11,129.37
  6. Step 6: Final answer
    x = 6,167.03

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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.