Home / 15,231.25-21,021.56-8,942.41

Finding the Fourth Proportional to 15,231.25, 21,021.56 and 8,942.41

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Solution

The fourth proportional to 15,231.25, 21,021.56 and 8,942.41 is: 12,341.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.25 : 21,021.56 = 8,942.41 : x
  2. Step 2: Convert to fraction form
    15,231.25/21,021.56 = 8,942.41/x
  3. Step 3: Cross multiply
    15,231.25x = 21,021.56 × 8,942.41
  4. Step 4: Simplify right side
    15,231.25x = 187,983,408.36
  5. Step 5: Solve for x
    x = 187,983,408.36/15,231.25
  6. Step 6: Final answer
    x = 12,341.96

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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.