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Finding the Fourth Proportional to 11,520, 15,898.32 and 6,552

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Solution

The fourth proportional to 11,520, 15,898.32 and 6,552 is: 9,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520 : 15,898.32 = 6,552 : x
  2. Step 2: Convert to fraction form
    11,520/15,898.32 = 6,552/x
  3. Step 3: Cross multiply
    11,520x = 15,898.32 × 6,552
  4. Step 4: Simplify right side
    11,520x = 104,165,792.64
  5. Step 5: Solve for x
    x = 104,165,792.64/11,520
  6. Step 6: Final answer
    x = 9,042.17

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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.