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Finding the Fourth Proportional to 12,553.92, 17,312.64 and 9,375.36

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Solution

The fourth proportional to 12,553.92, 17,312.64 and 9,375.36 is: 12,929.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,553.92 : 17,312.64 = 9,375.36 : x
  2. Step 2: Convert to fraction form
    12,553.92/17,312.64 = 9,375.36/x
  3. Step 3: Cross multiply
    12,553.92x = 17,312.64 × 9,375.36
  4. Step 4: Simplify right side
    12,553.92x = 162,312,232.55
  5. Step 5: Solve for x
    x = 162,312,232.55/12,553.92
  6. Step 6: Final answer
    x = 12,929.21

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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.