Home / 18,925.20-28,388.79-8,392.77

Finding the Fourth Proportional to 18,925.20, 28,388.79 and 8,392.77

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Solution

The fourth proportional to 18,925.20, 28,388.79 and 8,392.77 is: 12,589.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.20 : 28,388.79 = 8,392.77 : x
  2. Step 2: Convert to fraction form
    18,925.20/28,388.79 = 8,392.77/x
  3. Step 3: Cross multiply
    18,925.20x = 28,388.79 × 8,392.77
  4. Step 4: Simplify right side
    18,925.20x = 238,260,585.05
  5. Step 5: Solve for x
    x = 238,260,585.05/18,925.20
  6. Step 6: Final answer
    x = 12,589.59

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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.