Home / 28,811.07-39,732.85-19,749.60

Finding the Fourth Proportional to 28,811.07, 39,732.85 and 19,749.60

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Solution

The fourth proportional to 28,811.07, 39,732.85 and 19,749.60 is: 27,236.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.07 : 39,732.85 = 19,749.60 : x
  2. Step 2: Convert to fraction form
    28,811.07/39,732.85 = 19,749.60/x
  3. Step 3: Cross multiply
    28,811.07x = 39,732.85 × 19,749.60
  4. Step 4: Simplify right side
    28,811.07x = 784,707,646.32
  5. Step 5: Solve for x
    x = 784,707,646.32/28,811.07
  6. Step 6: Final answer
    x = 27,236.33

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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.