Home / 27,728.13-38,269.26-21,804.78

Finding the Fourth Proportional to 27,728.13, 38,269.26 and 21,804.78

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Solution

The fourth proportional to 27,728.13, 38,269.26 and 21,804.78 is: 30,094.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.13 : 38,269.26 = 21,804.78 : x
  2. Step 2: Convert to fraction form
    27,728.13/38,269.26 = 21,804.78/x
  3. Step 3: Cross multiply
    27,728.13x = 38,269.26 × 21,804.78
  4. Step 4: Simplify right side
    27,728.13x = 834,452,795.06
  5. Step 5: Solve for x
    x = 834,452,795.06/27,728.13
  6. Step 6: Final answer
    x = 30,094.09

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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.