Home / 21,847.93-30,149.25-12,287.56

Finding the Fourth Proportional to 21,847.93, 30,149.25 and 12,287.56

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Solution

The fourth proportional to 21,847.93, 30,149.25 and 12,287.56 is: 16,956.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,847.93 : 30,149.25 = 12,287.56 : x
  2. Step 2: Convert to fraction form
    21,847.93/30,149.25 = 12,287.56/x
  3. Step 3: Cross multiply
    21,847.93x = 30,149.25 × 12,287.56
  4. Step 4: Simplify right side
    21,847.93x = 370,460,718.33
  5. Step 5: Solve for x
    x = 370,460,718.33/21,847.93
  6. Step 6: Final answer
    x = 16,956.33

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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.