Home / 43,822.40-65,733.60-12,660.80

Finding the Fourth Proportional to 43,822.40, 65,733.60 and 12,660.80

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Solution

The fourth proportional to 43,822.40, 65,733.60 and 12,660.80 is: 18,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,822.40 : 65,733.60 = 12,660.80 : x
  2. Step 2: Convert to fraction form
    43,822.40/65,733.60 = 12,660.80/x
  3. Step 3: Cross multiply
    43,822.40x = 65,733.60 × 12,660.80
  4. Step 4: Simplify right side
    43,822.40x = 832,239,962.88
  5. Step 5: Solve for x
    x = 832,239,962.88/43,822.40
  6. Step 6: Final answer
    x = 18,991.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.