Home / 28,104.80-42,135.60-15,792.80

Finding the Fourth Proportional to 28,104.80, 42,135.60 and 15,792.80

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Solution

The fourth proportional to 28,104.80, 42,135.60 and 15,792.80 is: 23,677.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.80 : 42,135.60 = 15,792.80 : x
  2. Step 2: Convert to fraction form
    28,104.80/42,135.60 = 15,792.80/x
  3. Step 3: Cross multiply
    28,104.80x = 42,135.60 × 15,792.80
  4. Step 4: Simplify right side
    28,104.80x = 665,439,103.68
  5. Step 5: Solve for x
    x = 665,439,103.68/28,104.80
  6. Step 6: Final answer
    x = 23,677.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.