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Finding the Fourth Proportional to 26,308.40, 39,491.40 and 14,615.60

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Solution

The fourth proportional to 26,308.40, 39,491.40 and 14,615.60 is: 21,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,308.40 : 39,491.40 = 14,615.60 : x
  2. Step 2: Convert to fraction form
    26,308.40/39,491.40 = 14,615.60/x
  3. Step 3: Cross multiply
    26,308.40x = 39,491.40 × 14,615.60
  4. Step 4: Simplify right side
    26,308.40x = 577,190,505.84
  5. Step 5: Solve for x
    x = 577,190,505.84/26,308.40
  6. Step 6: Final answer
    x = 21,939.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.