Home / 20,165.34-27,829.98-11,212.68

Finding the Fourth Proportional to 20,165.34, 27,829.98 and 11,212.68

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Solution

The fourth proportional to 20,165.34, 27,829.98 and 11,212.68 is: 15,474.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.34 : 27,829.98 = 11,212.68 : x
  2. Step 2: Convert to fraction form
    20,165.34/27,829.98 = 11,212.68/x
  3. Step 3: Cross multiply
    20,165.34x = 27,829.98 × 11,212.68
  4. Step 4: Simplify right side
    20,165.34x = 312,048,660.15
  5. Step 5: Solve for x
    x = 312,048,660.15/20,165.34
  6. Step 6: Final answer
    x = 15,474.51

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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.