Home / 28,286.39-42,429.59-7,226.48

Finding the Fourth Proportional to 28,286.39, 42,429.59 and 7,226.48

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Solution

The fourth proportional to 28,286.39, 42,429.59 and 7,226.48 is: 10,839.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.39 : 42,429.59 = 7,226.48 : x
  2. Step 2: Convert to fraction form
    28,286.39/42,429.59 = 7,226.48/x
  3. Step 3: Cross multiply
    28,286.39x = 42,429.59 × 7,226.48
  4. Step 4: Simplify right side
    28,286.39x = 306,616,707.68
  5. Step 5: Solve for x
    x = 306,616,707.68/28,286.39
  6. Step 6: Final answer
    x = 10,839.72

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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.