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Finding the Fourth Proportional to 26,343.52, 39,516 and 8,812.72

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Solution

The fourth proportional to 26,343.52, 39,516 and 8,812.72 is: 13,219.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,343.52 : 39,516 = 8,812.72 : x
  2. Step 2: Convert to fraction form
    26,343.52/39,516 = 8,812.72/x
  3. Step 3: Cross multiply
    26,343.52x = 39,516 × 8,812.72
  4. Step 4: Simplify right side
    26,343.52x = 348,243,443.52
  5. Step 5: Solve for x
    x = 348,243,443.52/26,343.52
  6. Step 6: Final answer
    x = 13,219.32

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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.