Home / 28,228.27-42,342.42-7,169.89

Finding the Fourth Proportional to 28,228.27, 42,342.42 and 7,169.89

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Solution

The fourth proportional to 28,228.27, 42,342.42 and 7,169.89 is: 10,754.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.27 : 42,342.42 = 7,169.89 : x
  2. Step 2: Convert to fraction form
    28,228.27/42,342.42 = 7,169.89/x
  3. Step 3: Cross multiply
    28,228.27x = 42,342.42 × 7,169.89
  4. Step 4: Simplify right side
    28,228.27x = 303,590,387.88
  5. Step 5: Solve for x
    x = 303,590,387.88/28,228.27
  6. Step 6: Final answer
    x = 10,754.84

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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.