Home / 13,872.06-20,798.37-5,105.84

Finding the Fourth Proportional to 13,872.06, 20,798.37 and 5,105.84

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Solution

The fourth proportional to 13,872.06, 20,798.37 and 5,105.84 is: 7,655.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.06 : 20,798.37 = 5,105.84 : x
  2. Step 2: Convert to fraction form
    13,872.06/20,798.37 = 5,105.84/x
  3. Step 3: Cross multiply
    13,872.06x = 20,798.37 × 5,105.84
  4. Step 4: Simplify right side
    13,872.06x = 106,193,045.49
  5. Step 5: Solve for x
    x = 106,193,045.49/13,872.06
  6. Step 6: Final answer
    x = 7,655.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.