Home / 13,203.62-18,218.68-7,535.78

Finding the Fourth Proportional to 13,203.62, 18,218.68 and 7,535.78

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Solution

The fourth proportional to 13,203.62, 18,218.68 and 7,535.78 is: 10,398.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.62 : 18,218.68 = 7,535.78 : x
  2. Step 2: Convert to fraction form
    13,203.62/18,218.68 = 7,535.78/x
  3. Step 3: Cross multiply
    13,203.62x = 18,218.68 × 7,535.78
  4. Step 4: Simplify right side
    13,203.62x = 137,291,854.44
  5. Step 5: Solve for x
    x = 137,291,854.44/13,203.62
  6. Step 6: Final answer
    x = 10,398.05

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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.