Home / 28,780.76-39,720.29-16,843.38

Finding the Fourth Proportional to 28,780.76, 39,720.29 and 16,843.38

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Solution

The fourth proportional to 28,780.76, 39,720.29 and 16,843.38 is: 23,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.76 : 39,720.29 = 16,843.38 : x
  2. Step 2: Convert to fraction form
    28,780.76/39,720.29 = 16,843.38/x
  3. Step 3: Cross multiply
    28,780.76x = 39,720.29 × 16,843.38
  4. Step 4: Simplify right side
    28,780.76x = 669,023,938.18
  5. Step 5: Solve for x
    x = 669,023,938.18/28,780.76
  6. Step 6: Final answer
    x = 23,245.53

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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.