Home / 12,131.70-18,072.35-11,764.59

Finding the Fourth Proportional to 12,131.70, 18,072.35 and 11,764.59

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Solution

The fourth proportional to 12,131.70, 18,072.35 and 11,764.59 is: 17,525.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.70 : 18,072.35 = 11,764.59 : x
  2. Step 2: Convert to fraction form
    12,131.70/18,072.35 = 11,764.59/x
  3. Step 3: Cross multiply
    12,131.70x = 18,072.35 × 11,764.59
  4. Step 4: Simplify right side
    12,131.70x = 212,613,729.26
  5. Step 5: Solve for x
    x = 212,613,729.26/12,131.70
  6. Step 6: Final answer
    x = 17,525.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.