Home / 28,185.12-42,277.68-7,125.22

Finding the Fourth Proportional to 28,185.12, 42,277.68 and 7,125.22

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Solution

The fourth proportional to 28,185.12, 42,277.68 and 7,125.22 is: 10,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185.12 : 42,277.68 = 7,125.22 : x
  2. Step 2: Convert to fraction form
    28,185.12/42,277.68 = 7,125.22/x
  3. Step 3: Cross multiply
    28,185.12x = 42,277.68 × 7,125.22
  4. Step 4: Simplify right side
    28,185.12x = 301,237,771.09
  5. Step 5: Solve for x
    x = 301,237,771.09/28,185.12
  6. Step 6: Final answer
    x = 10,687.83

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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.