Home / 21,621.12-29,834.96-15,958.96

Finding the Fourth Proportional to 21,621.12, 29,834.96 and 15,958.96

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Solution

The fourth proportional to 21,621.12, 29,834.96 and 15,958.96 is: 22,021.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.12 : 29,834.96 = 15,958.96 : x
  2. Step 2: Convert to fraction form
    21,621.12/29,834.96 = 15,958.96/x
  3. Step 3: Cross multiply
    21,621.12x = 29,834.96 × 15,958.96
  4. Step 4: Simplify right side
    21,621.12x = 476,134,933.24
  5. Step 5: Solve for x
    x = 476,134,933.24/21,621.12
  6. Step 6: Final answer
    x = 22,021.75

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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.