Home / 28,179.48-42,269.22-8,458.32

Finding the Fourth Proportional to 28,179.48, 42,269.22 and 8,458.32

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Solution

The fourth proportional to 28,179.48, 42,269.22 and 8,458.32 is: 12,687.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.48 : 42,269.22 = 8,458.32 : x
  2. Step 2: Convert to fraction form
    28,179.48/42,269.22 = 8,458.32/x
  3. Step 3: Cross multiply
    28,179.48x = 42,269.22 × 8,458.32
  4. Step 4: Simplify right side
    28,179.48x = 357,526,588.91
  5. Step 5: Solve for x
    x = 357,526,588.91/28,179.48
  6. Step 6: Final answer
    x = 12,687.48

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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.