Home / 20,997.06-29,014.56-15,322.20

Finding the Fourth Proportional to 20,997.06, 29,014.56 and 15,322.20

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Solution

The fourth proportional to 20,997.06, 29,014.56 and 15,322.20 is: 21,172.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.06 : 29,014.56 = 15,322.20 : x
  2. Step 2: Convert to fraction form
    20,997.06/29,014.56 = 15,322.20/x
  3. Step 3: Cross multiply
    20,997.06x = 29,014.56 × 15,322.20
  4. Step 4: Simplify right side
    20,997.06x = 444,566,891.23
  5. Step 5: Solve for x
    x = 444,566,891.23/20,997.06
  6. Step 6: Final answer
    x = 21,172.82

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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.