Home / 19,811.20-27,339.76-11,853.76

Finding the Fourth Proportional to 19,811.20, 27,339.76 and 11,853.76

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Solution

The fourth proportional to 19,811.20, 27,339.76 and 11,853.76 is: 16,358.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.20 : 27,339.76 = 11,853.76 : x
  2. Step 2: Convert to fraction form
    19,811.20/27,339.76 = 11,853.76/x
  3. Step 3: Cross multiply
    19,811.20x = 27,339.76 × 11,853.76
  4. Step 4: Simplify right side
    19,811.20x = 324,078,953.50
  5. Step 5: Solve for x
    x = 324,078,953.50/19,811.20
  6. Step 6: Final answer
    x = 16,358.37

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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.