Home / 13,281.30-18,332.82-8,249.40

Finding the Fourth Proportional to 13,281.30, 18,332.82 and 8,249.40

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Solution

The fourth proportional to 13,281.30, 18,332.82 and 8,249.40 is: 11,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.30 : 18,332.82 = 8,249.40 : x
  2. Step 2: Convert to fraction form
    13,281.30/18,332.82 = 8,249.40/x
  3. Step 3: Cross multiply
    13,281.30x = 18,332.82 × 8,249.40
  4. Step 4: Simplify right side
    13,281.30x = 151,234,765.31
  5. Step 5: Solve for x
    x = 151,234,765.31/13,281.30
  6. Step 6: Final answer
    x = 11,387.05

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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.