Home / 19,723.32-27,220.74-11,223.78

Finding the Fourth Proportional to 19,723.32, 27,220.74 and 11,223.78

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Solution

The fourth proportional to 19,723.32, 27,220.74 and 11,223.78 is: 15,490.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,723.32 : 27,220.74 = 11,223.78 : x
  2. Step 2: Convert to fraction form
    19,723.32/27,220.74 = 11,223.78/x
  3. Step 3: Cross multiply
    19,723.32x = 27,220.74 × 11,223.78
  4. Step 4: Simplify right side
    19,723.32x = 305,519,597.20
  5. Step 5: Solve for x
    x = 305,519,597.20/19,723.32
  6. Step 6: Final answer
    x = 15,490.27

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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.