Home / 18,742.44-25,885.82-12,763.72

Finding the Fourth Proportional to 18,742.44, 25,885.82 and 12,763.72

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Solution

The fourth proportional to 18,742.44, 25,885.82 and 12,763.72 is: 17,628.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.44 : 25,885.82 = 12,763.72 : x
  2. Step 2: Convert to fraction form
    18,742.44/25,885.82 = 12,763.72/x
  3. Step 3: Cross multiply
    18,742.44x = 25,885.82 × 12,763.72
  4. Step 4: Simplify right side
    18,742.44x = 330,399,358.45
  5. Step 5: Solve for x
    x = 330,399,358.45/18,742.44
  6. Step 6: Final answer
    x = 17,628.41

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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.