Home / 13,872.12-19,133.64-8,494.80

Finding the Fourth Proportional to 13,872.12, 19,133.64 and 8,494.80

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Solution

The fourth proportional to 13,872.12, 19,133.64 and 8,494.80 is: 11,716.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.12 : 19,133.64 = 8,494.80 : x
  2. Step 2: Convert to fraction form
    13,872.12/19,133.64 = 8,494.80/x
  3. Step 3: Cross multiply
    13,872.12x = 19,133.64 × 8,494.80
  4. Step 4: Simplify right side
    13,872.12x = 162,536,445.07
  5. Step 5: Solve for x
    x = 162,536,445.07/13,872.12
  6. Step 6: Final answer
    x = 11,716.77

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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.