Home / 13,640.28-18,823.84-7,975.52

Finding the Fourth Proportional to 13,640.28, 18,823.84 and 7,975.52

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Solution

The fourth proportional to 13,640.28, 18,823.84 and 7,975.52 is: 11,006.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.28 : 18,823.84 = 7,975.52 : x
  2. Step 2: Convert to fraction form
    13,640.28/18,823.84 = 7,975.52/x
  3. Step 3: Cross multiply
    13,640.28x = 18,823.84 × 7,975.52
  4. Step 4: Simplify right side
    13,640.28x = 150,129,912.40
  5. Step 5: Solve for x
    x = 150,129,912.40/13,640.28
  6. Step 6: Final answer
    x = 11,006.37

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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.