Home / 28,833.28-39,766.86-19,878.76

Finding the Fourth Proportional to 28,833.28, 39,766.86 and 19,878.76

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Solution

The fourth proportional to 28,833.28, 39,766.86 and 19,878.76 is: 27,416.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,833.28 : 39,766.86 = 19,878.76 : x
  2. Step 2: Convert to fraction form
    28,833.28/39,766.86 = 19,878.76/x
  3. Step 3: Cross multiply
    28,833.28x = 39,766.86 × 19,878.76
  4. Step 4: Simplify right side
    28,833.28x = 790,515,865.89
  5. Step 5: Solve for x
    x = 790,515,865.89/28,833.28
  6. Step 6: Final answer
    x = 27,416.79

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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.