Home / 12,943.23-19,401.37-8,783.57

Finding the Fourth Proportional to 12,943.23, 19,401.37 and 8,783.57

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Solution

The fourth proportional to 12,943.23, 19,401.37 and 8,783.57 is: 13,166.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.23 : 19,401.37 = 8,783.57 : x
  2. Step 2: Convert to fraction form
    12,943.23/19,401.37 = 8,783.57/x
  3. Step 3: Cross multiply
    12,943.23x = 19,401.37 × 8,783.57
  4. Step 4: Simplify right side
    12,943.23x = 170,413,367.44
  5. Step 5: Solve for x
    x = 170,413,367.44/12,943.23
  6. Step 6: Final answer
    x = 13,166.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.