Home / 20,513.36-28,308.45-11,081.92

Finding the Fourth Proportional to 20,513.36, 28,308.45 and 11,081.92

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Solution

The fourth proportional to 20,513.36, 28,308.45 and 11,081.92 is: 15,293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.36 : 28,308.45 = 11,081.92 : x
  2. Step 2: Convert to fraction form
    20,513.36/28,308.45 = 11,081.92/x
  3. Step 3: Cross multiply
    20,513.36x = 28,308.45 × 11,081.92
  4. Step 4: Simplify right side
    20,513.36x = 313,711,836.68
  5. Step 5: Solve for x
    x = 313,711,836.68/20,513.36
  6. Step 6: Final answer
    x = 15,293.05

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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.