Home / 21,939.96-30,277.72-13,441.92

Finding the Fourth Proportional to 21,939.96, 30,277.72 and 13,441.92

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Solution

The fourth proportional to 21,939.96, 30,277.72 and 13,441.92 is: 18,550.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.96 : 30,277.72 = 13,441.92 : x
  2. Step 2: Convert to fraction form
    21,939.96/30,277.72 = 13,441.92/x
  3. Step 3: Cross multiply
    21,939.96x = 30,277.72 × 13,441.92
  4. Step 4: Simplify right side
    21,939.96x = 406,990,690.02
  5. Step 5: Solve for x
    x = 406,990,690.02/21,939.96
  6. Step 6: Final answer
    x = 18,550.20

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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.