Home / 18,884.90-28,306.56-7,785.50

Finding the Fourth Proportional to 18,884.90, 28,306.56 and 7,785.50

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Solution

The fourth proportional to 18,884.90, 28,306.56 and 7,785.50 is: 11,669.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,884.90 : 28,306.56 = 7,785.50 : x
  2. Step 2: Convert to fraction form
    18,884.90/28,306.56 = 7,785.50/x
  3. Step 3: Cross multiply
    18,884.90x = 28,306.56 × 7,785.50
  4. Step 4: Simplify right side
    18,884.90x = 220,380,722.88
  5. Step 5: Solve for x
    x = 220,380,722.88/18,884.90
  6. Step 6: Final answer
    x = 11,669.68

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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.