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Finding the Fourth Proportional to 43,457.64, 65,200.92 and 13,879.68

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Solution

The fourth proportional to 43,457.64, 65,200.92 and 13,879.68 is: 20,824.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,457.64 : 65,200.92 = 13,879.68 : x
  2. Step 2: Convert to fraction form
    43,457.64/65,200.92 = 13,879.68/x
  3. Step 3: Cross multiply
    43,457.64x = 65,200.92 × 13,879.68
  4. Step 4: Simplify right side
    43,457.64x = 904,967,905.31
  5. Step 5: Solve for x
    x = 904,967,905.31/43,457.64
  6. Step 6: Final answer
    x = 20,824.14

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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.