Home / 27,679.49-38,199.35-20,954.46

Finding the Fourth Proportional to 27,679.49, 38,199.35 and 20,954.46

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Solution

The fourth proportional to 27,679.49, 38,199.35 and 20,954.46 is: 28,918.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,679.49 : 38,199.35 = 20,954.46 : x
  2. Step 2: Convert to fraction form
    27,679.49/38,199.35 = 20,954.46/x
  3. Step 3: Cross multiply
    27,679.49x = 38,199.35 × 20,954.46
  4. Step 4: Simplify right side
    27,679.49x = 800,446,829.37
  5. Step 5: Solve for x
    x = 800,446,829.37/27,679.49
  6. Step 6: Final answer
    x = 28,918.41

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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.