Home / 43,803.60-65,716.37-12,638.85

Finding the Fourth Proportional to 43,803.60, 65,716.37 and 12,638.85

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Solution

The fourth proportional to 43,803.60, 65,716.37 and 12,638.85 is: 18,961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,803.60 : 65,716.37 = 12,638.85 : x
  2. Step 2: Convert to fraction form
    43,803.60/65,716.37 = 12,638.85/x
  3. Step 3: Cross multiply
    43,803.60x = 65,716.37 × 12,638.85
  4. Step 4: Simplify right side
    43,803.60x = 830,579,279.78
  5. Step 5: Solve for x
    x = 830,579,279.78/43,803.60
  6. Step 6: Final answer
    x = 18,961.44

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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.