Home / 15,415.21-21,273.05-8,341.63

Finding the Fourth Proportional to 15,415.21, 21,273.05 and 8,341.63

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Solution

The fourth proportional to 15,415.21, 21,273.05 and 8,341.63 is: 11,511.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.21 : 21,273.05 = 8,341.63 : x
  2. Step 2: Convert to fraction form
    15,415.21/21,273.05 = 8,341.63/x
  3. Step 3: Cross multiply
    15,415.21x = 21,273.05 × 8,341.63
  4. Step 4: Simplify right side
    15,415.21x = 177,451,896.95
  5. Step 5: Solve for x
    x = 177,451,896.95/15,415.21
  6. Step 6: Final answer
    x = 11,511.48

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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.