Home / 13,218.02-18,239.41-7,249.63

Finding the Fourth Proportional to 13,218.02, 18,239.41 and 7,249.63

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Solution

The fourth proportional to 13,218.02, 18,239.41 and 7,249.63 is: 10,003.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.02 : 18,239.41 = 7,249.63 : x
  2. Step 2: Convert to fraction form
    13,218.02/18,239.41 = 7,249.63/x
  3. Step 3: Cross multiply
    13,218.02x = 18,239.41 × 7,249.63
  4. Step 4: Simplify right side
    13,218.02x = 132,228,973.92
  5. Step 5: Solve for x
    x = 132,228,973.92/13,218.02
  6. Step 6: Final answer
    x = 10,003.69

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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.