Home / 11,687.45-16,130.21-6,650.69

Finding the Fourth Proportional to 11,687.45, 16,130.21 and 6,650.69

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Solution

The fourth proportional to 11,687.45, 16,130.21 and 6,650.69 is: 9,178.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.45 : 16,130.21 = 6,650.69 : x
  2. Step 2: Convert to fraction form
    11,687.45/16,130.21 = 6,650.69/x
  3. Step 3: Cross multiply
    11,687.45x = 16,130.21 × 6,650.69
  4. Step 4: Simplify right side
    11,687.45x = 107,276,993.09
  5. Step 5: Solve for x
    x = 107,276,993.09/11,687.45
  6. Step 6: Final answer
    x = 9,178.82

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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.