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Finding the Fourth Proportional to 11,160.52, 15,402 and 6,685

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Solution

The fourth proportional to 11,160.52, 15,402 and 6,685 is: 9,225.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.52 : 15,402 = 6,685 : x
  2. Step 2: Convert to fraction form
    11,160.52/15,402 = 6,685/x
  3. Step 3: Cross multiply
    11,160.52x = 15,402 × 6,685
  4. Step 4: Simplify right side
    11,160.52x = 102,962,370
  5. Step 5: Solve for x
    x = 102,962,370/11,160.52
  6. Step 6: Final answer
    x = 9,225.59

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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.