Home / 15,300.82-21,115.25-8,586.60

Finding the Fourth Proportional to 15,300.82, 21,115.25 and 8,586.60

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Solution

The fourth proportional to 15,300.82, 21,115.25 and 8,586.60 is: 11,849.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,300.82 : 21,115.25 = 8,586.60 : x
  2. Step 2: Convert to fraction form
    15,300.82/21,115.25 = 8,586.60/x
  3. Step 3: Cross multiply
    15,300.82x = 21,115.25 × 8,586.60
  4. Step 4: Simplify right side
    15,300.82x = 181,308,205.65
  5. Step 5: Solve for x
    x = 181,308,205.65/15,300.82
  6. Step 6: Final answer
    x = 11,849.57

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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.