Home / 11,889.81-16,408.05-7,173.18

Finding the Fourth Proportional to 11,889.81, 16,408.05 and 7,173.18

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Solution

The fourth proportional to 11,889.81, 16,408.05 and 7,173.18 is: 9,899.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889.81 : 16,408.05 = 7,173.18 : x
  2. Step 2: Convert to fraction form
    11,889.81/16,408.05 = 7,173.18/x
  3. Step 3: Cross multiply
    11,889.81x = 16,408.05 × 7,173.18
  4. Step 4: Simplify right side
    11,889.81x = 117,697,896.10
  5. Step 5: Solve for x
    x = 117,697,896.10/11,889.81
  6. Step 6: Final answer
    x = 9,899.06

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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.