Home / 18,911.58-28,370.46-5,760.88

Finding the Fourth Proportional to 18,911.58, 28,370.46 and 5,760.88

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Solution

The fourth proportional to 18,911.58, 28,370.46 and 5,760.88 is: 8,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.58 : 28,370.46 = 5,760.88 : x
  2. Step 2: Convert to fraction form
    18,911.58/28,370.46 = 5,760.88/x
  3. Step 3: Cross multiply
    18,911.58x = 28,370.46 × 5,760.88
  4. Step 4: Simplify right side
    18,911.58x = 163,438,815.60
  5. Step 5: Solve for x
    x = 163,438,815.60/18,911.58
  6. Step 6: Final answer
    x = 8,642.26

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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.