Home / 28,915.80-39,910.77-18,167.10

Finding the Fourth Proportional to 28,915.80, 39,910.77 and 18,167.10

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Solution

The fourth proportional to 28,915.80, 39,910.77 and 18,167.10 is: 25,074.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.80 : 39,910.77 = 18,167.10 : x
  2. Step 2: Convert to fraction form
    28,915.80/39,910.77 = 18,167.10/x
  3. Step 3: Cross multiply
    28,915.80x = 39,910.77 × 18,167.10
  4. Step 4: Simplify right side
    28,915.80x = 725,062,949.67
  5. Step 5: Solve for x
    x = 725,062,949.67/28,915.80
  6. Step 6: Final answer
    x = 25,074.97

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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.