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Finding the Fourth Proportional to 26,636.94, 39,945.02 and 9,987.90

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Solution

The fourth proportional to 26,636.94, 39,945.02 and 9,987.90 is: 14,977.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,636.94 : 39,945.02 = 9,987.90 : x
  2. Step 2: Convert to fraction form
    26,636.94/39,945.02 = 9,987.90/x
  3. Step 3: Cross multiply
    26,636.94x = 39,945.02 × 9,987.90
  4. Step 4: Simplify right side
    26,636.94x = 398,966,890.23
  5. Step 5: Solve for x
    x = 398,966,890.23/26,636.94
  6. Step 6: Final answer
    x = 14,977.96

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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.