Home / 20,020.37-27,628.89-13,294.40

Finding the Fourth Proportional to 20,020.37, 27,628.89 and 13,294.40

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Solution

The fourth proportional to 20,020.37, 27,628.89 and 13,294.40 is: 18,346.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.37 : 27,628.89 = 13,294.40 : x
  2. Step 2: Convert to fraction form
    20,020.37/27,628.89 = 13,294.40/x
  3. Step 3: Cross multiply
    20,020.37x = 27,628.89 × 13,294.40
  4. Step 4: Simplify right side
    20,020.37x = 367,309,515.22
  5. Step 5: Solve for x
    x = 367,309,515.22/20,020.37
  6. Step 6: Final answer
    x = 18,346.79

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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.