Home / 13,218.94-18,243.30-7,251.77

Finding the Fourth Proportional to 13,218.94, 18,243.30 and 7,251.77

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Solution

The fourth proportional to 13,218.94, 18,243.30 and 7,251.77 is: 10,008.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.94 : 18,243.30 = 7,251.77 : x
  2. Step 2: Convert to fraction form
    13,218.94/18,243.30 = 7,251.77/x
  3. Step 3: Cross multiply
    13,218.94x = 18,243.30 × 7,251.77
  4. Step 4: Simplify right side
    13,218.94x = 132,296,215.64
  5. Step 5: Solve for x
    x = 132,296,215.64/13,218.94
  6. Step 6: Final answer
    x = 10,008.08

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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.