Home / 14,087.25-19,438.74-8,120.88

Finding the Fourth Proportional to 14,087.25, 19,438.74 and 8,120.88

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Solution

The fourth proportional to 14,087.25, 19,438.74 and 8,120.88 is: 11,205.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,087.25 : 19,438.74 = 8,120.88 : x
  2. Step 2: Convert to fraction form
    14,087.25/19,438.74 = 8,120.88/x
  3. Step 3: Cross multiply
    14,087.25x = 19,438.74 × 8,120.88
  4. Step 4: Simplify right side
    14,087.25x = 157,859,674.89
  5. Step 5: Solve for x
    x = 157,859,674.89/14,087.25
  6. Step 6: Final answer
    x = 11,205.85

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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.