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Finding the Fourth Proportional to 43,508.41, 65,270.78 and 13,918.30

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Solution

The fourth proportional to 43,508.41, 65,270.78 and 13,918.30 is: 20,880.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,508.41 : 65,270.78 = 13,918.30 : x
  2. Step 2: Convert to fraction form
    43,508.41/65,270.78 = 13,918.30/x
  3. Step 3: Cross multiply
    43,508.41x = 65,270.78 × 13,918.30
  4. Step 4: Simplify right side
    43,508.41x = 908,457,901.33
  5. Step 5: Solve for x
    x = 908,457,901.33/43,508.41
  6. Step 6: Final answer
    x = 20,880.06

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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.