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Finding the Fourth Proportional to 43,900.88, 65,862.12 and 12,735.68

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Solution

The fourth proportional to 43,900.88, 65,862.12 and 12,735.68 is: 19,106.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,900.88 : 65,862.12 = 12,735.68 : x
  2. Step 2: Convert to fraction form
    43,900.88/65,862.12 = 12,735.68/x
  3. Step 3: Cross multiply
    43,900.88x = 65,862.12 × 12,735.68
  4. Step 4: Simplify right side
    43,900.88x = 838,798,884.44
  5. Step 5: Solve for x
    x = 838,798,884.44/43,900.88
  6. Step 6: Final answer
    x = 19,106.65

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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.