Home / 43,378.62-65,066.31-12,213.06

Finding the Fourth Proportional to 43,378.62, 65,066.31 and 12,213.06

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Solution

The fourth proportional to 43,378.62, 65,066.31 and 12,213.06 is: 18,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,378.62 : 65,066.31 = 12,213.06 : x
  2. Step 2: Convert to fraction form
    43,378.62/65,066.31 = 12,213.06/x
  3. Step 3: Cross multiply
    43,378.62x = 65,066.31 × 12,213.06
  4. Step 4: Simplify right side
    43,378.62x = 794,658,748.01
  5. Step 5: Solve for x
    x = 794,658,748.01/43,378.62
  6. Step 6: Final answer
    x = 18,319.13

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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.