Home / 28,780.26-39,719.60-16,842.88

Finding the Fourth Proportional to 28,780.26, 39,719.60 and 16,842.88

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Solution

The fourth proportional to 28,780.26, 39,719.60 and 16,842.88 is: 23,244.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.26 : 39,719.60 = 16,842.88 : x
  2. Step 2: Convert to fraction form
    28,780.26/39,719.60 = 16,842.88/x
  3. Step 3: Cross multiply
    28,780.26x = 39,719.60 × 16,842.88
  4. Step 4: Simplify right side
    28,780.26x = 668,992,456.45
  5. Step 5: Solve for x
    x = 668,992,456.45/28,780.26
  6. Step 6: Final answer
    x = 23,244.84

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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.