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Finding the Fourth Proportional to 13,569.29, 18,732.40 and 8,536.29

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Solution

The fourth proportional to 13,569.29, 18,732.40 and 8,536.29 is: 11,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,569.29 : 18,732.40 = 8,536.29 : x
  2. Step 2: Convert to fraction form
    13,569.29/18,732.40 = 8,536.29/x
  3. Step 3: Cross multiply
    13,569.29x = 18,732.40 × 8,536.29
  4. Step 4: Simplify right side
    13,569.29x = 159,905,107.21
  5. Step 5: Solve for x
    x = 159,905,107.21/13,569.29
  6. Step 6: Final answer
    x = 11,784.34

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1.5x scale

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.