Home / 20,242.72-27,904.46-15,758.56

Finding the Fourth Proportional to 20,242.72, 27,904.46 and 15,758.56

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Solution

The fourth proportional to 20,242.72, 27,904.46 and 15,758.56 is: 21,723.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.72 : 27,904.46 = 15,758.56 : x
  2. Step 2: Convert to fraction form
    20,242.72/27,904.46 = 15,758.56/x
  3. Step 3: Cross multiply
    20,242.72x = 27,904.46 × 15,758.56
  4. Step 4: Simplify right side
    20,242.72x = 439,734,107.18
  5. Step 5: Solve for x
    x = 439,734,107.18/20,242.72
  6. Step 6: Final answer
    x = 21,723.07

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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.