Home / 20,806.08-28,710.96-11,853.28

Finding the Fourth Proportional to 20,806.08, 28,710.96 and 11,853.28

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Solution

The fourth proportional to 20,806.08, 28,710.96 and 11,853.28 is: 16,356.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.08 : 28,710.96 = 11,853.28 : x
  2. Step 2: Convert to fraction form
    20,806.08/28,710.96 = 11,853.28/x
  3. Step 3: Cross multiply
    20,806.08x = 28,710.96 × 11,853.28
  4. Step 4: Simplify right side
    20,806.08x = 340,319,047.95
  5. Step 5: Solve for x
    x = 340,319,047.95/20,806.08
  6. Step 6: Final answer
    x = 16,356.71

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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.