Home / 28,237.27-38,968.28-15,661.75

Finding the Fourth Proportional to 28,237.27, 38,968.28 and 15,661.75

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Solution

The fourth proportional to 28,237.27, 38,968.28 and 15,661.75 is: 21,613.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.27 : 38,968.28 = 15,661.75 : x
  2. Step 2: Convert to fraction form
    28,237.27/38,968.28 = 15,661.75/x
  3. Step 3: Cross multiply
    28,237.27x = 38,968.28 × 15,661.75
  4. Step 4: Simplify right side
    28,237.27x = 610,311,380.98
  5. Step 5: Solve for x
    x = 610,311,380.98/28,237.27
  6. Step 6: Final answer
    x = 21,613.68

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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.