Home / 15,795.06-21,796.98-8,721.54

Finding the Fourth Proportional to 15,795.06, 21,796.98 and 8,721.54

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Solution

The fourth proportional to 15,795.06, 21,796.98 and 8,721.54 is: 12,035.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,795.06 : 21,796.98 = 8,721.54 : x
  2. Step 2: Convert to fraction form
    15,795.06/21,796.98 = 8,721.54/x
  3. Step 3: Cross multiply
    15,795.06x = 21,796.98 × 8,721.54
  4. Step 4: Simplify right side
    15,795.06x = 190,103,232.95
  5. Step 5: Solve for x
    x = 190,103,232.95/15,795.06
  6. Step 6: Final answer
    x = 12,035.61

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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.