Home / 20,285.12-27,993.68-11,901.76

Finding the Fourth Proportional to 20,285.12, 27,993.68 and 11,901.76

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Solution

The fourth proportional to 20,285.12, 27,993.68 and 11,901.76 is: 16,424.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.12 : 27,993.68 = 11,901.76 : x
  2. Step 2: Convert to fraction form
    20,285.12/27,993.68 = 11,901.76/x
  3. Step 3: Cross multiply
    20,285.12x = 27,993.68 × 11,901.76
  4. Step 4: Simplify right side
    20,285.12x = 333,174,060.88
  5. Step 5: Solve for x
    x = 333,174,060.88/20,285.12
  6. Step 6: Final answer
    x = 16,424.55

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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.