Home / 27,993.40-38,638.83-18,440.26

Finding the Fourth Proportional to 27,993.40, 38,638.83 and 18,440.26

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Solution

The fourth proportional to 27,993.40, 38,638.83 and 18,440.26 is: 25,452.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,993.40 : 38,638.83 = 18,440.26 : x
  2. Step 2: Convert to fraction form
    27,993.40/38,638.83 = 18,440.26/x
  3. Step 3: Cross multiply
    27,993.40x = 38,638.83 × 18,440.26
  4. Step 4: Simplify right side
    27,993.40x = 712,510,071.30
  5. Step 5: Solve for x
    x = 712,510,071.30/27,993.40
  6. Step 6: Final answer
    x = 25,452.79

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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.