Home / 43,729.60-65,578.20-14,148.40

Finding the Fourth Proportional to 43,729.60, 65,578.20 and 14,148.40

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Solution

The fourth proportional to 43,729.60, 65,578.20 and 14,148.40 is: 21,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,729.60 : 65,578.20 = 14,148.40 : x
  2. Step 2: Convert to fraction form
    43,729.60/65,578.20 = 14,148.40/x
  3. Step 3: Cross multiply
    43,729.60x = 65,578.20 × 14,148.40
  4. Step 4: Simplify right side
    43,729.60x = 927,826,604.88
  5. Step 5: Solve for x
    x = 927,826,604.88/43,729.60
  6. Step 6: Final answer
    x = 21,217.36

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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.