Home / 28,144.96-42,203.40-9,418.48

Finding the Fourth Proportional to 28,144.96, 42,203.40 and 9,418.48

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Solution

The fourth proportional to 28,144.96, 42,203.40 and 9,418.48 is: 14,123.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.96 : 42,203.40 = 9,418.48 : x
  2. Step 2: Convert to fraction form
    28,144.96/42,203.40 = 9,418.48/x
  3. Step 3: Cross multiply
    28,144.96x = 42,203.40 × 9,418.48
  4. Step 4: Simplify right side
    28,144.96x = 397,491,878.83
  5. Step 5: Solve for x
    x = 397,491,878.83/28,144.96
  6. Step 6: Final answer
    x = 14,123.02

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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.