Home / 28,238.44-42,356.38-12,439.25

Finding the Fourth Proportional to 28,238.44, 42,356.38 and 12,439.25

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Solution

The fourth proportional to 28,238.44, 42,356.38 and 12,439.25 is: 18,658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,238.44 : 42,356.38 = 12,439.25 : x
  2. Step 2: Convert to fraction form
    28,238.44/42,356.38 = 12,439.25/x
  3. Step 3: Cross multiply
    28,238.44x = 42,356.38 × 12,439.25
  4. Step 4: Simplify right side
    28,238.44x = 526,881,437.56
  5. Step 5: Solve for x
    x = 526,881,437.56/28,238.44
  6. Step 6: Final answer
    x = 18,658.30

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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.