Home / 43,520.28-65,284.22-12,355.53

Finding the Fourth Proportional to 43,520.28, 65,284.22 and 12,355.53

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Solution

The fourth proportional to 43,520.28, 65,284.22 and 12,355.53 is: 18,534.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,520.28 : 65,284.22 = 12,355.53 : x
  2. Step 2: Convert to fraction form
    43,520.28/65,284.22 = 12,355.53/x
  3. Step 3: Cross multiply
    43,520.28x = 65,284.22 × 12,355.53
  4. Step 4: Simplify right side
    43,520.28x = 806,621,138.74
  5. Step 5: Solve for x
    x = 806,621,138.74/43,520.28
  6. Step 6: Final answer
    x = 18,534.37

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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.