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Finding the Fourth Proportional to 13,245.00, 18,278.42 and 7,277.05

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Solution

The fourth proportional to 13,245.00, 18,278.42 and 7,277.05 is: 10,042.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.00 : 18,278.42 = 7,277.05 : x
  2. Step 2: Convert to fraction form
    13,245.00/18,278.42 = 7,277.05/x
  3. Step 3: Cross multiply
    13,245.00x = 18,278.42 × 7,277.05
  4. Step 4: Simplify right side
    13,245.00x = 133,013,021.96
  5. Step 5: Solve for x
    x = 133,013,021.96/13,245.00
  6. Step 6: Final answer
    x = 10,042.51

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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.