Home / 28,442.20-42,644.98-11,813.68

Finding the Fourth Proportional to 28,442.20, 42,644.98 and 11,813.68

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Solution

The fourth proportional to 28,442.20, 42,644.98 and 11,813.68 is: 17,712.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.20 : 42,644.98 = 11,813.68 : x
  2. Step 2: Convert to fraction form
    28,442.20/42,644.98 = 11,813.68/x
  3. Step 3: Cross multiply
    28,442.20x = 42,644.98 × 11,813.68
  4. Step 4: Simplify right side
    28,442.20x = 503,794,147.33
  5. Step 5: Solve for x
    x = 503,794,147.33/28,442.20
  6. Step 6: Final answer
    x = 17,712.91

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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.