Home / 20,809.06-28,713.64-11,854.84

Finding the Fourth Proportional to 20,809.06, 28,713.64 and 11,854.84

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Solution

The fourth proportional to 20,809.06, 28,713.64 and 11,854.84 is: 16,358.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809.06 : 28,713.64 = 11,854.84 : x
  2. Step 2: Convert to fraction form
    20,809.06/28,713.64 = 11,854.84/x
  3. Step 3: Cross multiply
    20,809.06x = 28,713.64 × 11,854.84
  4. Step 4: Simplify right side
    20,809.06x = 340,395,608.02
  5. Step 5: Solve for x
    x = 340,395,608.02/20,809.06
  6. Step 6: Final answer
    x = 16,358.05

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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.