Home / 28,286.96-39,050.64-19,940.72

Finding the Fourth Proportional to 28,286.96, 39,050.64 and 19,940.72

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Solution

The fourth proportional to 28,286.96, 39,050.64 and 19,940.72 is: 27,528.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.96 : 39,050.64 = 19,940.72 : x
  2. Step 2: Convert to fraction form
    28,286.96/39,050.64 = 19,940.72/x
  3. Step 3: Cross multiply
    28,286.96x = 39,050.64 × 19,940.72
  4. Step 4: Simplify right side
    28,286.96x = 778,697,878.06
  5. Step 5: Solve for x
    x = 778,697,878.06/28,286.96
  6. Step 6: Final answer
    x = 27,528.51

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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.