Home / 15,310.62-21,129.84-8,852.22

Finding the Fourth Proportional to 15,310.62, 21,129.84 and 8,852.22

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Solution

The fourth proportional to 15,310.62, 21,129.84 and 8,852.22 is: 12,216.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.62 : 21,129.84 = 8,852.22 : x
  2. Step 2: Convert to fraction form
    15,310.62/21,129.84 = 8,852.22/x
  3. Step 3: Cross multiply
    15,310.62x = 21,129.84 × 8,852.22
  4. Step 4: Simplify right side
    15,310.62x = 187,045,992.24
  5. Step 5: Solve for x
    x = 187,045,992.24/15,310.62
  6. Step 6: Final answer
    x = 12,216.75

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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.