Home / 28,546.12-39,380.50-18,477.80

Finding the Fourth Proportional to 28,546.12, 39,380.50 and 18,477.80

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Solution

The fourth proportional to 28,546.12, 39,380.50 and 18,477.80 is: 25,490.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,546.12 : 39,380.50 = 18,477.80 : x
  2. Step 2: Convert to fraction form
    28,546.12/39,380.50 = 18,477.80/x
  3. Step 3: Cross multiply
    28,546.12x = 39,380.50 × 18,477.80
  4. Step 4: Simplify right side
    28,546.12x = 727,665,002.90
  5. Step 5: Solve for x
    x = 727,665,002.90/28,546.12
  6. Step 6: Final answer
    x = 25,490.85

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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.