Home / 28,230.67-42,309.09-11,571.20

Finding the Fourth Proportional to 28,230.67, 42,309.09 and 11,571.20

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Solution

The fourth proportional to 28,230.67, 42,309.09 and 11,571.20 is: 17,341.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230.67 : 42,309.09 = 11,571.20 : x
  2. Step 2: Convert to fraction form
    28,230.67/42,309.09 = 11,571.20/x
  3. Step 3: Cross multiply
    28,230.67x = 42,309.09 × 11,571.20
  4. Step 4: Simplify right side
    28,230.67x = 489,566,942.21
  5. Step 5: Solve for x
    x = 489,566,942.21/28,230.67
  6. Step 6: Final answer
    x = 17,341.67

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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.