Home / 14,089.70-19,439.37-8,120.55

Finding the Fourth Proportional to 14,089.70, 19,439.37 and 8,120.55

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Solution

The fourth proportional to 14,089.70, 19,439.37 and 8,120.55 is: 11,203.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,089.70 : 19,439.37 = 8,120.55 : x
  2. Step 2: Convert to fraction form
    14,089.70/19,439.37 = 8,120.55/x
  3. Step 3: Cross multiply
    14,089.70x = 19,439.37 × 8,120.55
  4. Step 4: Simplify right side
    14,089.70x = 157,858,376.05
  5. Step 5: Solve for x
    x = 157,858,376.05/14,089.70
  6. Step 6: Final answer
    x = 11,203.82

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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.