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Finding the Fourth Proportional to 28,736.64, 39,644 and 17,552

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Solution

The fourth proportional to 28,736.64, 39,644 and 17,552 is: 24,214.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,736.64 : 39,644 = 17,552 : x
  2. Step 2: Convert to fraction form
    28,736.64/39,644 = 17,552/x
  3. Step 3: Cross multiply
    28,736.64x = 39,644 × 17,552
  4. Step 4: Simplify right side
    28,736.64x = 695,831,488
  5. Step 5: Solve for x
    x = 695,831,488/28,736.64
  6. Step 6: Final answer
    x = 24,214.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.