Home / 20,220.96-27,892.24-13,922.40

Finding the Fourth Proportional to 20,220.96, 27,892.24 and 13,922.40

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Solution

The fourth proportional to 20,220.96, 27,892.24 and 13,922.40 is: 19,204.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.96 : 27,892.24 = 13,922.40 : x
  2. Step 2: Convert to fraction form
    20,220.96/27,892.24 = 13,922.40/x
  3. Step 3: Cross multiply
    20,220.96x = 27,892.24 × 13,922.40
  4. Step 4: Simplify right side
    20,220.96x = 388,326,922.18
  5. Step 5: Solve for x
    x = 388,326,922.18/20,220.96
  6. Step 6: Final answer
    x = 19,204.18

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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.