Home / 11,880.50-16,399.41-6,912.50

Finding the Fourth Proportional to 11,880.50, 16,399.41 and 6,912.50

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Solution

The fourth proportional to 11,880.50, 16,399.41 and 6,912.50 is: 9,541.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,880.50 : 16,399.41 = 6,912.50 : x
  2. Step 2: Convert to fraction form
    11,880.50/16,399.41 = 6,912.50/x
  3. Step 3: Cross multiply
    11,880.50x = 16,399.41 × 6,912.50
  4. Step 4: Simplify right side
    11,880.50x = 113,360,921.63
  5. Step 5: Solve for x
    x = 113,360,921.63/11,880.50
  6. Step 6: Final answer
    x = 9,541.76

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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.