Home / 28,091.05-42,136.58-7,314.55

Finding the Fourth Proportional to 28,091.05, 42,136.58 and 7,314.55

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Solution

The fourth proportional to 28,091.05, 42,136.58 and 7,314.55 is: 10,971.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.05 : 42,136.58 = 7,314.55 : x
  2. Step 2: Convert to fraction form
    28,091.05/42,136.58 = 7,314.55/x
  3. Step 3: Cross multiply
    28,091.05x = 42,136.58 × 7,314.55
  4. Step 4: Simplify right side
    28,091.05x = 308,210,121.24
  5. Step 5: Solve for x
    x = 308,210,121.24/28,091.05
  6. Step 6: Final answer
    x = 10,971.83

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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.