Home / 43,725.40-65,588.10-18,761.20

Finding the Fourth Proportional to 43,725.40, 65,588.10 and 18,761.20

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Solution

The fourth proportional to 43,725.40, 65,588.10 and 18,761.20 is: 28,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,725.40 : 65,588.10 = 18,761.20 : x
  2. Step 2: Convert to fraction form
    43,725.40/65,588.10 = 18,761.20/x
  3. Step 3: Cross multiply
    43,725.40x = 65,588.10 × 18,761.20
  4. Step 4: Simplify right side
    43,725.40x = 1,230,511,461.72
  5. Step 5: Solve for x
    x = 1,230,511,461.72/43,725.40
  6. Step 6: Final answer
    x = 28,141.80

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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.