Home / 18,930.32-28,395.48-5,079.68

Finding the Fourth Proportional to 18,930.32, 28,395.48 and 5,079.68

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Solution

The fourth proportional to 18,930.32, 28,395.48 and 5,079.68 is: 7,619.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.32 : 28,395.48 = 5,079.68 : x
  2. Step 2: Convert to fraction form
    18,930.32/28,395.48 = 5,079.68/x
  3. Step 3: Cross multiply
    18,930.32x = 28,395.48 × 5,079.68
  4. Step 4: Simplify right side
    18,930.32x = 144,239,951.85
  5. Step 5: Solve for x
    x = 144,239,951.85/18,930.32
  6. Step 6: Final answer
    x = 7,619.52

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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.