Home / 28,660.20-42,990.30-27,129.30

Finding the Fourth Proportional to 28,660.20, 42,990.30 and 27,129.30

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Solution

The fourth proportional to 28,660.20, 42,990.30 and 27,129.30 is: 40,693.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.20 : 42,990.30 = 27,129.30 : x
  2. Step 2: Convert to fraction form
    28,660.20/42,990.30 = 27,129.30/x
  3. Step 3: Cross multiply
    28,660.20x = 42,990.30 × 27,129.30
  4. Step 4: Simplify right side
    28,660.20x = 1,166,296,745.79
  5. Step 5: Solve for x
    x = 1,166,296,745.79/28,660.20
  6. Step 6: Final answer
    x = 40,693.95

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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.