Home / 28,132.98-42,190.97-9,408.21

Finding the Fourth Proportional to 28,132.98, 42,190.97 and 9,408.21

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Solution

The fourth proportional to 28,132.98, 42,190.97 and 9,408.21 is: 14,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.98 : 42,190.97 = 9,408.21 : x
  2. Step 2: Convert to fraction form
    28,132.98/42,190.97 = 9,408.21/x
  3. Step 3: Cross multiply
    28,132.98x = 42,190.97 × 9,408.21
  4. Step 4: Simplify right side
    28,132.98x = 396,941,458.82
  5. Step 5: Solve for x
    x = 396,941,458.82/28,132.98
  6. Step 6: Final answer
    x = 14,109.47

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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.