Home / 13,257.06-19,868.40-6,138.61

Finding the Fourth Proportional to 13,257.06, 19,868.40 and 6,138.61

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Solution

The fourth proportional to 13,257.06, 19,868.40 and 6,138.61 is: 9,199.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.06 : 19,868.40 = 6,138.61 : x
  2. Step 2: Convert to fraction form
    13,257.06/19,868.40 = 6,138.61/x
  3. Step 3: Cross multiply
    13,257.06x = 19,868.40 × 6,138.61
  4. Step 4: Simplify right side
    13,257.06x = 121,964,228.89
  5. Step 5: Solve for x
    x = 121,964,228.89/13,257.06
  6. Step 6: Final answer
    x = 9,199.94

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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.