Home / 18,719.52-28,079.37-7,626.32

Finding the Fourth Proportional to 18,719.52, 28,079.37 and 7,626.32

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Solution

The fourth proportional to 18,719.52, 28,079.37 and 7,626.32 is: 11,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.52 : 28,079.37 = 7,626.32 : x
  2. Step 2: Convert to fraction form
    18,719.52/28,079.37 = 7,626.32/x
  3. Step 3: Cross multiply
    18,719.52x = 28,079.37 × 7,626.32
  4. Step 4: Simplify right side
    18,719.52x = 214,142,120.62
  5. Step 5: Solve for x
    x = 214,142,120.62/18,719.52
  6. Step 6: Final answer
    x = 11,439.51

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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.