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Finding the Fourth Proportional to 26,610, 39,915.20 and 11,814.94

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Solution

The fourth proportional to 26,610, 39,915.20 and 11,814.94 is: 17,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,610 : 39,915.20 = 11,814.94 : x
  2. Step 2: Convert to fraction form
    26,610/39,915.20 = 11,814.94/x
  3. Step 3: Cross multiply
    26,610x = 39,915.20 × 11,814.94
  4. Step 4: Simplify right side
    26,610x = 471,595,693.09
  5. Step 5: Solve for x
    x = 471,595,693.09/26,610
  6. Step 6: Final answer
    x = 17,722.50

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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.