Home / 43,686.24-65,539.62-12,520.68

Finding the Fourth Proportional to 43,686.24, 65,539.62 and 12,520.68

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Solution

The fourth proportional to 43,686.24, 65,539.62 and 12,520.68 is: 18,783.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,686.24 : 65,539.62 = 12,520.68 : x
  2. Step 2: Convert to fraction form
    43,686.24/65,539.62 = 12,520.68/x
  3. Step 3: Cross multiply
    43,686.24x = 65,539.62 × 12,520.68
  4. Step 4: Simplify right side
    43,686.24x = 820,600,609.34
  5. Step 5: Solve for x
    x = 820,600,609.34/43,686.24
  6. Step 6: Final answer
    x = 18,783.96

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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.