Home / 28,147.87-42,222.31-9,424.41

Finding the Fourth Proportional to 28,147.87, 42,222.31 and 9,424.41

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Solution

The fourth proportional to 28,147.87, 42,222.31 and 9,424.41 is: 14,136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.87 : 42,222.31 = 9,424.41 : x
  2. Step 2: Convert to fraction form
    28,147.87/42,222.31 = 9,424.41/x
  3. Step 3: Cross multiply
    28,147.87x = 42,222.31 × 9,424.41
  4. Step 4: Simplify right side
    28,147.87x = 397,920,360.59
  5. Step 5: Solve for x
    x = 397,920,360.59/28,147.87
  6. Step 6: Final answer
    x = 14,136.78

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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.