Home / 30,131.45-45,197.64-11,406.46

Finding the Fourth Proportional to 30,131.45, 45,197.64 and 11,406.46

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Solution

The fourth proportional to 30,131.45, 45,197.64 and 11,406.46 is: 17,109.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.45 : 45,197.64 = 11,406.46 : x
  2. Step 2: Convert to fraction form
    30,131.45/45,197.64 = 11,406.46/x
  3. Step 3: Cross multiply
    30,131.45x = 45,197.64 × 11,406.46
  4. Step 4: Simplify right side
    30,131.45x = 515,545,015.72
  5. Step 5: Solve for x
    x = 515,545,015.72/30,131.45
  6. Step 6: Final answer
    x = 17,109.86

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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.