Home / 28,187.32-38,893.76-16,861.44

Finding the Fourth Proportional to 28,187.32, 38,893.76 and 16,861.44

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Solution

The fourth proportional to 28,187.32, 38,893.76 and 16,861.44 is: 23,265.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.32 : 38,893.76 = 16,861.44 : x
  2. Step 2: Convert to fraction form
    28,187.32/38,893.76 = 16,861.44/x
  3. Step 3: Cross multiply
    28,187.32x = 38,893.76 × 16,861.44
  4. Step 4: Simplify right side
    28,187.32x = 655,804,800.61
  5. Step 5: Solve for x
    x = 655,804,800.61/28,187.32
  6. Step 6: Final answer
    x = 23,265.95

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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.