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Finding the Fourth Proportional to 43,613.08, 65,395.74 and 13,619.08

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Solution

The fourth proportional to 43,613.08, 65,395.74 and 13,619.08 is: 20,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,613.08 : 65,395.74 = 13,619.08 : x
  2. Step 2: Convert to fraction form
    43,613.08/65,395.74 = 13,619.08/x
  3. Step 3: Cross multiply
    43,613.08x = 65,395.74 × 13,619.08
  4. Step 4: Simplify right side
    43,613.08x = 890,629,814.72
  5. Step 5: Solve for x
    x = 890,629,814.72/43,613.08
  6. Step 6: Final answer
    x = 20,421.16

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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.