Home / 11,686.66-16,128.24-6,381.96

Finding the Fourth Proportional to 11,686.66, 16,128.24 and 6,381.96

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Solution

The fourth proportional to 11,686.66, 16,128.24 and 6,381.96 is: 8,807.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,686.66 : 16,128.24 = 6,381.96 : x
  2. Step 2: Convert to fraction form
    11,686.66/16,128.24 = 6,381.96/x
  3. Step 3: Cross multiply
    11,686.66x = 16,128.24 × 6,381.96
  4. Step 4: Simplify right side
    11,686.66x = 102,929,782.55
  5. Step 5: Solve for x
    x = 102,929,782.55/11,686.66
  6. Step 6: Final answer
    x = 8,807.46

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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.