Home / 20,285.92-27,989.79-12,327.67

Finding the Fourth Proportional to 20,285.92, 27,989.79 and 12,327.67

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Solution

The fourth proportional to 20,285.92, 27,989.79 and 12,327.67 is: 17,009.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.92 : 27,989.79 = 12,327.67 : x
  2. Step 2: Convert to fraction form
    20,285.92/27,989.79 = 12,327.67/x
  3. Step 3: Cross multiply
    20,285.92x = 27,989.79 × 12,327.67
  4. Step 4: Simplify right side
    20,285.92x = 345,048,894.49
  5. Step 5: Solve for x
    x = 345,048,894.49/20,285.92
  6. Step 6: Final answer
    x = 17,009.28

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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.