Home / 19,769.86-27,279.71-11,810.39

Finding the Fourth Proportional to 19,769.86, 27,279.71 and 11,810.39

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Solution

The fourth proportional to 19,769.86, 27,279.71 and 11,810.39 is: 16,296.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,769.86 : 27,279.71 = 11,810.39 : x
  2. Step 2: Convert to fraction form
    19,769.86/27,279.71 = 11,810.39/x
  3. Step 3: Cross multiply
    19,769.86x = 27,279.71 × 11,810.39
  4. Step 4: Simplify right side
    19,769.86x = 322,184,049.69
  5. Step 5: Solve for x
    x = 322,184,049.69/19,769.86
  6. Step 6: Final answer
    x = 16,296.73

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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.