Home / 18,612.23-27,919.85-5,285.34

Finding the Fourth Proportional to 18,612.23, 27,919.85 and 5,285.34

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Solution

The fourth proportional to 18,612.23, 27,919.85 and 5,285.34 is: 7,928.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.23 : 27,919.85 = 5,285.34 : x
  2. Step 2: Convert to fraction form
    18,612.23/27,919.85 = 5,285.34/x
  3. Step 3: Cross multiply
    18,612.23x = 27,919.85 × 5,285.34
  4. Step 4: Simplify right side
    18,612.23x = 147,565,873.57
  5. Step 5: Solve for x
    x = 147,565,873.57/18,612.23
  6. Step 6: Final answer
    x = 7,928.44

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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.