Home / 18,983.20-28,466.70-7,886.20

Finding the Fourth Proportional to 18,983.20, 28,466.70 and 7,886.20

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Solution

The fourth proportional to 18,983.20, 28,466.70 and 7,886.20 is: 11,825.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.20 : 28,466.70 = 7,886.20 : x
  2. Step 2: Convert to fraction form
    18,983.20/28,466.70 = 7,886.20/x
  3. Step 3: Cross multiply
    18,983.20x = 28,466.70 × 7,886.20
  4. Step 4: Simplify right side
    18,983.20x = 224,494,089.54
  5. Step 5: Solve for x
    x = 224,494,089.54/18,983.20
  6. Step 6: Final answer
    x = 11,825.94

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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.