Home / 28,120.06-42,179.26-7,343.56

Finding the Fourth Proportional to 28,120.06, 42,179.26 and 7,343.56

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Solution

The fourth proportional to 28,120.06, 42,179.26 and 7,343.56 is: 11,015.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.06 : 42,179.26 = 7,343.56 : x
  2. Step 2: Convert to fraction form
    28,120.06/42,179.26 = 7,343.56/x
  3. Step 3: Cross multiply
    28,120.06x = 42,179.26 × 7,343.56
  4. Step 4: Simplify right side
    28,120.06x = 309,745,926.57
  5. Step 5: Solve for x
    x = 309,745,926.57/28,120.06
  6. Step 6: Final answer
    x = 11,015.12

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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.