Home / 13,245.31-18,278.90-7,277.37

Finding the Fourth Proportional to 13,245.31, 18,278.90 and 7,277.37

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Solution

The fourth proportional to 13,245.31, 18,278.90 and 7,277.37 is: 10,042.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.31 : 18,278.90 = 7,277.37 : x
  2. Step 2: Convert to fraction form
    13,245.31/18,278.90 = 7,277.37/x
  3. Step 3: Cross multiply
    13,245.31x = 18,278.90 × 7,277.37
  4. Step 4: Simplify right side
    13,245.31x = 133,022,318.49
  5. Step 5: Solve for x
    x = 133,022,318.49/13,245.31
  6. Step 6: Final answer
    x = 10,042.98

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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.