Home / 13,123.44-18,071.64-11,725.68

Finding the Fourth Proportional to 13,123.44, 18,071.64 and 11,725.68

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Solution

The fourth proportional to 13,123.44, 18,071.64 and 11,725.68 is: 16,146.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.44 : 18,071.64 = 11,725.68 : x
  2. Step 2: Convert to fraction form
    13,123.44/18,071.64 = 11,725.68/x
  3. Step 3: Cross multiply
    13,123.44x = 18,071.64 × 11,725.68
  4. Step 4: Simplify right side
    13,123.44x = 211,902,267.72
  5. Step 5: Solve for x
    x = 211,902,267.72/13,123.44
  6. Step 6: Final answer
    x = 16,146.85

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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.