Home / 13,217.85-18,240.65-7,249.91

Finding the Fourth Proportional to 13,217.85, 18,240.65 and 7,249.91

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Solution

The fourth proportional to 13,217.85, 18,240.65 and 7,249.91 is: 10,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.85 : 18,240.65 = 7,249.91 : x
  2. Step 2: Convert to fraction form
    13,217.85/18,240.65 = 7,249.91/x
  3. Step 3: Cross multiply
    13,217.85x = 18,240.65 × 7,249.91
  4. Step 4: Simplify right side
    13,217.85x = 132,242,943.39
  5. Step 5: Solve for x
    x = 132,242,943.39/13,217.85
  6. Step 6: Final answer
    x = 10,004.88

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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.