Home / 15,558.11-21,469.34-8,842.80

Finding the Fourth Proportional to 15,558.11, 21,469.34 and 8,842.80

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Solution

The fourth proportional to 15,558.11, 21,469.34 and 8,842.80 is: 12,202.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.11 : 21,469.34 = 8,842.80 : x
  2. Step 2: Convert to fraction form
    15,558.11/21,469.34 = 8,842.80/x
  3. Step 3: Cross multiply
    15,558.11x = 21,469.34 × 8,842.80
  4. Step 4: Simplify right side
    15,558.11x = 189,849,057.65
  5. Step 5: Solve for x
    x = 189,849,057.65/15,558.11
  6. Step 6: Final answer
    x = 12,202.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.