Home / 19,190.52-26,488.62-12,121.65

Finding the Fourth Proportional to 19,190.52, 26,488.62 and 12,121.65

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Solution

The fourth proportional to 19,190.52, 26,488.62 and 12,121.65 is: 16,731.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,190.52 : 26,488.62 = 12,121.65 : x
  2. Step 2: Convert to fraction form
    19,190.52/26,488.62 = 12,121.65/x
  3. Step 3: Cross multiply
    19,190.52x = 26,488.62 × 12,121.65
  4. Step 4: Simplify right side
    19,190.52x = 321,085,780.62
  5. Step 5: Solve for x
    x = 321,085,780.62/19,190.52
  6. Step 6: Final answer
    x = 16,731.48

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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.