Home / 13,872.24-19,138.18-8,557.80

Finding the Fourth Proportional to 13,872.24, 19,138.18 and 8,557.80

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Solution

The fourth proportional to 13,872.24, 19,138.18 and 8,557.80 is: 11,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.24 : 19,138.18 = 8,557.80 : x
  2. Step 2: Convert to fraction form
    13,872.24/19,138.18 = 8,557.80/x
  3. Step 3: Cross multiply
    13,872.24x = 19,138.18 × 8,557.80
  4. Step 4: Simplify right side
    13,872.24x = 163,780,716.80
  5. Step 5: Solve for x
    x = 163,780,716.80/13,872.24
  6. Step 6: Final answer
    x = 11,806.36

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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.