Home / 11,686.21-16,127.70-6,650.87

Finding the Fourth Proportional to 11,686.21, 16,127.70 and 6,650.87

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Solution

The fourth proportional to 11,686.21, 16,127.70 and 6,650.87 is: 9,178.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,686.21 : 16,127.70 = 6,650.87 : x
  2. Step 2: Convert to fraction form
    11,686.21/16,127.70 = 6,650.87/x
  3. Step 3: Cross multiply
    11,686.21x = 16,127.70 × 6,650.87
  4. Step 4: Simplify right side
    11,686.21x = 107,263,276.65
  5. Step 5: Solve for x
    x = 107,263,276.65/11,686.21
  6. Step 6: Final answer
    x = 9,178.62

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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.