Home / 20,211.06-27,849.12-18,809.64

Finding the Fourth Proportional to 20,211.06, 27,849.12 and 18,809.64

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Solution

The fourth proportional to 20,211.06, 27,849.12 and 18,809.64 is: 25,918.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.06 : 27,849.12 = 18,809.64 : x
  2. Step 2: Convert to fraction form
    20,211.06/27,849.12 = 18,809.64/x
  3. Step 3: Cross multiply
    20,211.06x = 27,849.12 × 18,809.64
  4. Step 4: Simplify right side
    20,211.06x = 523,831,921.52
  5. Step 5: Solve for x
    x = 523,831,921.52/20,211.06
  6. Step 6: Final answer
    x = 25,918.08

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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.