Home / 12,357.70-17,040.25-8,819.46

Finding the Fourth Proportional to 12,357.70, 17,040.25 and 8,819.46

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Solution

The fourth proportional to 12,357.70, 17,040.25 and 8,819.46 is: 12,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.70 : 17,040.25 = 8,819.46 : x
  2. Step 2: Convert to fraction form
    12,357.70/17,040.25 = 8,819.46/x
  3. Step 3: Cross multiply
    12,357.70x = 17,040.25 × 8,819.46
  4. Step 4: Simplify right side
    12,357.70x = 150,285,803.27
  5. Step 5: Solve for x
    x = 150,285,803.27/12,357.70
  6. Step 6: Final answer
    x = 12,161.31

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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.