Home / 28,148.88-38,830.09-18,078.85

Finding the Fourth Proportional to 28,148.88, 38,830.09 and 18,078.85

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Solution

The fourth proportional to 28,148.88, 38,830.09 and 18,078.85 is: 24,938.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.88 : 38,830.09 = 18,078.85 : x
  2. Step 2: Convert to fraction form
    28,148.88/38,830.09 = 18,078.85/x
  3. Step 3: Cross multiply
    28,148.88x = 38,830.09 × 18,078.85
  4. Step 4: Simplify right side
    28,148.88x = 702,003,372.60
  5. Step 5: Solve for x
    x = 702,003,372.60/28,148.88
  6. Step 6: Final answer
    x = 24,938.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.