Home / 15,415.80-21,273.75-8,342.22

Finding the Fourth Proportional to 15,415.80, 21,273.75 and 8,342.22

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Solution

The fourth proportional to 15,415.80, 21,273.75 and 8,342.22 is: 11,512.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.80 : 21,273.75 = 8,342.22 : x
  2. Step 2: Convert to fraction form
    15,415.80/21,273.75 = 8,342.22/x
  3. Step 3: Cross multiply
    15,415.80x = 21,273.75 × 8,342.22
  4. Step 4: Simplify right side
    15,415.80x = 177,470,302.73
  5. Step 5: Solve for x
    x = 177,470,302.73/15,415.80
  6. Step 6: Final answer
    x = 11,512.23

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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.