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Finding the Fourth Proportional to 13,100, 19,655.36 and 5,700.64

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Solution

The fourth proportional to 13,100, 19,655.36 and 5,700.64 is: 8,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,100 : 19,655.36 = 5,700.64 : x
  2. Step 2: Convert to fraction form
    13,100/19,655.36 = 5,700.64/x
  3. Step 3: Cross multiply
    13,100x = 19,655.36 × 5,700.64
  4. Step 4: Simplify right side
    13,100x = 112,048,131.43
  5. Step 5: Solve for x
    x = 112,048,131.43/13,100
  6. Step 6: Final answer
    x = 8,553.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.