Home / 13,912.89-19,199.49-9,940.76

Finding the Fourth Proportional to 13,912.89, 19,199.49 and 9,940.76

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Solution

The fourth proportional to 13,912.89, 19,199.49 and 9,940.76 is: 13,718.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.89 : 19,199.49 = 9,940.76 : x
  2. Step 2: Convert to fraction form
    13,912.89/19,199.49 = 9,940.76/x
  3. Step 3: Cross multiply
    13,912.89x = 19,199.49 × 9,940.76
  4. Step 4: Simplify right side
    13,912.89x = 190,857,426.21
  5. Step 5: Solve for x
    x = 190,857,426.21/13,912.89
  6. Step 6: Final answer
    x = 13,718.03

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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.