Home / 20,113.20-27,751.92-12,153.84

Finding the Fourth Proportional to 20,113.20, 27,751.92 and 12,153.84

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Solution

The fourth proportional to 20,113.20, 27,751.92 and 12,153.84 is: 16,769.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.20 : 27,751.92 = 12,153.84 : x
  2. Step 2: Convert to fraction form
    20,113.20/27,751.92 = 12,153.84/x
  3. Step 3: Cross multiply
    20,113.20x = 27,751.92 × 12,153.84
  4. Step 4: Simplify right side
    20,113.20x = 337,292,395.37
  5. Step 5: Solve for x
    x = 337,292,395.37/20,113.20
  6. Step 6: Final answer
    x = 16,769.70

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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.