Home / 19,279.38-28,950.47-11,930.66

Finding the Fourth Proportional to 19,279.38, 28,950.47 and 11,930.66

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Solution

The fourth proportional to 19,279.38, 28,950.47 and 11,930.66 is: 17,915.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,279.38 : 28,950.47 = 11,930.66 : x
  2. Step 2: Convert to fraction form
    19,279.38/28,950.47 = 11,930.66/x
  3. Step 3: Cross multiply
    19,279.38x = 28,950.47 × 11,930.66
  4. Step 4: Simplify right side
    19,279.38x = 345,398,010.00
  5. Step 5: Solve for x
    x = 345,398,010.00/19,279.38
  6. Step 6: Final answer
    x = 17,915.41

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1.5x scale

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.