Home / 13,217.79-18,240.69-7,249.59

Finding the Fourth Proportional to 13,217.79, 18,240.69 and 7,249.59

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Solution

The fourth proportional to 13,217.79, 18,240.69 and 7,249.59 is: 10,004.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.79 : 18,240.69 = 7,249.59 : x
  2. Step 2: Convert to fraction form
    13,217.79/18,240.69 = 7,249.59/x
  3. Step 3: Cross multiply
    13,217.79x = 18,240.69 × 7,249.59
  4. Step 4: Simplify right side
    13,217.79x = 132,237,523.82
  5. Step 5: Solve for x
    x = 132,237,523.82/13,217.79
  6. Step 6: Final answer
    x = 10,004.51

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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.