Home / 30,665.50-45,983.26-12,650.37

Finding the Fourth Proportional to 30,665.50, 45,983.26 and 12,650.37

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Solution

The fourth proportional to 30,665.50, 45,983.26 and 12,650.37 is: 18,969.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,665.50 : 45,983.26 = 12,650.37 : x
  2. Step 2: Convert to fraction form
    30,665.50/45,983.26 = 12,650.37/x
  3. Step 3: Cross multiply
    30,665.50x = 45,983.26 × 12,650.37
  4. Step 4: Simplify right side
    30,665.50x = 581,705,247.03
  5. Step 5: Solve for x
    x = 581,705,247.03/30,665.50
  6. Step 6: Final answer
    x = 18,969.37

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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.