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Finding the Fourth Proportional to 43,814.60, 65,697.60 and 18,850.40

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Solution

The fourth proportional to 43,814.60, 65,697.60 and 18,850.40 is: 28,265.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,814.60 : 65,697.60 = 18,850.40 : x
  2. Step 2: Convert to fraction form
    43,814.60/65,697.60 = 18,850.40/x
  3. Step 3: Cross multiply
    43,814.60x = 65,697.60 × 18,850.40
  4. Step 4: Simplify right side
    43,814.60x = 1,238,426,039.04
  5. Step 5: Solve for x
    x = 1,238,426,039.04/43,814.60
  6. Step 6: Final answer
    x = 28,265.15

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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.