Home / 20,741.68-28,618.68-11,788.48

Finding the Fourth Proportional to 20,741.68, 28,618.68 and 11,788.48

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Solution

The fourth proportional to 20,741.68, 28,618.68 and 11,788.48 is: 16,265.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.68 : 28,618.68 = 11,788.48 : x
  2. Step 2: Convert to fraction form
    20,741.68/28,618.68 = 11,788.48/x
  3. Step 3: Cross multiply
    20,741.68x = 28,618.68 × 11,788.48
  4. Step 4: Simplify right side
    20,741.68x = 337,370,736.81
  5. Step 5: Solve for x
    x = 337,370,736.81/20,741.68
  6. Step 6: Final answer
    x = 16,265.35

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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.