Home / 15,245.22-21,039.20-8,530.44

Finding the Fourth Proportional to 15,245.22, 21,039.20 and 8,530.44

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Solution

The fourth proportional to 15,245.22, 21,039.20 and 8,530.44 is: 11,772.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,245.22 : 21,039.20 = 8,530.44 : x
  2. Step 2: Convert to fraction form
    15,245.22/21,039.20 = 8,530.44/x
  3. Step 3: Cross multiply
    15,245.22x = 21,039.20 × 8,530.44
  4. Step 4: Simplify right side
    15,245.22x = 179,473,633.25
  5. Step 5: Solve for x
    x = 179,473,633.25/15,245.22
  6. Step 6: Final answer
    x = 11,772.45

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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.