Home / 18,638.96-25,720.56-10,679.36

Finding the Fourth Proportional to 18,638.96, 25,720.56 and 10,679.36

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Solution

The fourth proportional to 18,638.96, 25,720.56 and 10,679.36 is: 14,736.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.96 : 25,720.56 = 10,679.36 : x
  2. Step 2: Convert to fraction form
    18,638.96/25,720.56 = 10,679.36/x
  3. Step 3: Cross multiply
    18,638.96x = 25,720.56 × 10,679.36
  4. Step 4: Simplify right side
    18,638.96x = 274,679,119.64
  5. Step 5: Solve for x
    x = 274,679,119.64/18,638.96
  6. Step 6: Final answer
    x = 14,736.83

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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.