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Finding the Fourth Proportional to 43,561.70, 65,348.62 and 13,988.60

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Solution

The fourth proportional to 43,561.70, 65,348.62 and 13,988.60 is: 20,984.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,561.70 : 65,348.62 = 13,988.60 : x
  2. Step 2: Convert to fraction form
    43,561.70/65,348.62 = 13,988.60/x
  3. Step 3: Cross multiply
    43,561.70x = 65,348.62 × 13,988.60
  4. Step 4: Simplify right side
    43,561.70x = 914,135,667.76
  5. Step 5: Solve for x
    x = 914,135,667.76/43,561.70
  6. Step 6: Final answer
    x = 20,984.85

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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.