Home / 15,523.20-21,421.98-8,449.44

Finding the Fourth Proportional to 15,523.20, 21,421.98 and 8,449.44

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Solution

The fourth proportional to 15,523.20, 21,421.98 and 8,449.44 is: 11,660.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.20 : 21,421.98 = 8,449.44 : x
  2. Step 2: Convert to fraction form
    15,523.20/21,421.98 = 8,449.44/x
  3. Step 3: Cross multiply
    15,523.20x = 21,421.98 × 8,449.44
  4. Step 4: Simplify right side
    15,523.20x = 181,003,734.69
  5. Step 5: Solve for x
    x = 181,003,734.69/15,523.20
  6. Step 6: Final answer
    x = 11,660.21

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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.