Home / 19,723.75-27,219.43-10,771.78

Finding the Fourth Proportional to 19,723.75, 27,219.43 and 10,771.78

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Solution

The fourth proportional to 19,723.75, 27,219.43 and 10,771.78 is: 14,865.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,723.75 : 27,219.43 = 10,771.78 : x
  2. Step 2: Convert to fraction form
    19,723.75/27,219.43 = 10,771.78/x
  3. Step 3: Cross multiply
    19,723.75x = 27,219.43 × 10,771.78
  4. Step 4: Simplify right side
    19,723.75x = 293,201,657.83
  5. Step 5: Solve for x
    x = 293,201,657.83/19,723.75
  6. Step 6: Final answer
    x = 14,865.42

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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.