Home / 21,747.52-30,011.52-11,811.52

Finding the Fourth Proportional to 21,747.52, 30,011.52 and 11,811.52

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Solution

The fourth proportional to 21,747.52, 30,011.52 and 11,811.52 is: 16,299.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.52 : 30,011.52 = 11,811.52 : x
  2. Step 2: Convert to fraction form
    21,747.52/30,011.52 = 11,811.52/x
  3. Step 3: Cross multiply
    21,747.52x = 30,011.52 × 11,811.52
  4. Step 4: Simplify right side
    21,747.52x = 354,481,668.71
  5. Step 5: Solve for x
    x = 354,481,668.71/21,747.52
  6. Step 6: Final answer
    x = 16,299.87

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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.