Home / 28,151.20-42,226.80-7,376.80

Finding the Fourth Proportional to 28,151.20, 42,226.80 and 7,376.80

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Solution

The fourth proportional to 28,151.20, 42,226.80 and 7,376.80 is: 11,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,151.20 : 42,226.80 = 7,376.80 : x
  2. Step 2: Convert to fraction form
    28,151.20/42,226.80 = 7,376.80/x
  3. Step 3: Cross multiply
    28,151.20x = 42,226.80 × 7,376.80
  4. Step 4: Simplify right side
    28,151.20x = 311,498,658.24
  5. Step 5: Solve for x
    x = 311,498,658.24/28,151.20
  6. Step 6: Final answer
    x = 11,065.20

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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.