Home / 28,790.20-39,729.54-17,612.20

Finding the Fourth Proportional to 28,790.20, 39,729.54 and 17,612.20

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Solution

The fourth proportional to 28,790.20, 39,729.54 and 17,612.20 is: 24,304.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,790.20 : 39,729.54 = 17,612.20 : x
  2. Step 2: Convert to fraction form
    28,790.20/39,729.54 = 17,612.20/x
  3. Step 3: Cross multiply
    28,790.20x = 39,729.54 × 17,612.20
  4. Step 4: Simplify right side
    28,790.20x = 699,724,604.39
  5. Step 5: Solve for x
    x = 699,724,604.39/28,790.20
  6. Step 6: Final answer
    x = 24,304.26

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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.