Home / 15,352.12-21,185.82-8,728.12

Finding the Fourth Proportional to 15,352.12, 21,185.82 and 8,728.12

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Solution

The fourth proportional to 15,352.12, 21,185.82 and 8,728.12 is: 12,044.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,352.12 : 21,185.82 = 8,728.12 : x
  2. Step 2: Convert to fraction form
    15,352.12/21,185.82 = 8,728.12/x
  3. Step 3: Cross multiply
    15,352.12x = 21,185.82 × 8,728.12
  4. Step 4: Simplify right side
    15,352.12x = 184,912,379.26
  5. Step 5: Solve for x
    x = 184,912,379.26/15,352.12
  6. Step 6: Final answer
    x = 12,044.75

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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.