Home / 28,190.12-42,281.82-7,415.24

Finding the Fourth Proportional to 28,190.12, 42,281.82 and 7,415.24

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Solution

The fourth proportional to 28,190.12, 42,281.82 and 7,415.24 is: 11,121.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190.12 : 42,281.82 = 7,415.24 : x
  2. Step 2: Convert to fraction form
    28,190.12/42,281.82 = 7,415.24/x
  3. Step 3: Cross multiply
    28,190.12x = 42,281.82 × 7,415.24
  4. Step 4: Simplify right side
    28,190.12x = 313,529,842.94
  5. Step 5: Solve for x
    x = 313,529,842.94/28,190.12
  6. Step 6: Final answer
    x = 11,121.98

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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.