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Finding the Fourth Proportional to 13,602.10, 18,771.04 and 7,633.48

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Solution

The fourth proportional to 13,602.10, 18,771.04 and 7,633.48 is: 10,534.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602.10 : 18,771.04 = 7,633.48 : x
  2. Step 2: Convert to fraction form
    13,602.10/18,771.04 = 7,633.48/x
  3. Step 3: Cross multiply
    13,602.10x = 18,771.04 × 7,633.48
  4. Step 4: Simplify right side
    13,602.10x = 143,288,358.42
  5. Step 5: Solve for x
    x = 143,288,358.42/13,602.10
  6. Step 6: Final answer
    x = 10,534.28

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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.