Home / 13,374.72-18,458.28-11,391.84

Finding the Fourth Proportional to 13,374.72, 18,458.28 and 11,391.84

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Solution

The fourth proportional to 13,374.72, 18,458.28 and 11,391.84 is: 15,721.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,374.72 : 18,458.28 = 11,391.84 : x
  2. Step 2: Convert to fraction form
    13,374.72/18,458.28 = 11,391.84/x
  3. Step 3: Cross multiply
    13,374.72x = 18,458.28 × 11,391.84
  4. Step 4: Simplify right side
    13,374.72x = 210,273,772.44
  5. Step 5: Solve for x
    x = 210,273,772.44/13,374.72
  6. Step 6: Final answer
    x = 15,721.73

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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.