Home / 12,339.03-18,391.23-11,638.43

Finding the Fourth Proportional to 12,339.03, 18,391.23 and 11,638.43

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Solution

The fourth proportional to 12,339.03, 18,391.23 and 11,638.43 is: 17,346.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.03 : 18,391.23 = 11,638.43 : x
  2. Step 2: Convert to fraction form
    12,339.03/18,391.23 = 11,638.43/x
  3. Step 3: Cross multiply
    12,339.03x = 18,391.23 × 11,638.43
  4. Step 4: Simplify right side
    12,339.03x = 214,044,951.01
  5. Step 5: Solve for x
    x = 214,044,951.01/12,339.03
  6. Step 6: Final answer
    x = 17,346.98

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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.