Home / 43,853.40-65,780.10-12,691.80

Finding the Fourth Proportional to 43,853.40, 65,780.10 and 12,691.80

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Solution

The fourth proportional to 43,853.40, 65,780.10 and 12,691.80 is: 19,037.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,853.40 : 65,780.10 = 12,691.80 : x
  2. Step 2: Convert to fraction form
    43,853.40/65,780.10 = 12,691.80/x
  3. Step 3: Cross multiply
    43,853.40x = 65,780.10 × 12,691.80
  4. Step 4: Simplify right side
    43,853.40x = 834,867,873.18
  5. Step 5: Solve for x
    x = 834,867,873.18/43,853.40
  6. Step 6: Final answer
    x = 19,037.70

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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.