Home / 13,487.77-18,609.96-8,182.45

Finding the Fourth Proportional to 13,487.77, 18,609.96 and 8,182.45

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Solution

The fourth proportional to 13,487.77, 18,609.96 and 8,182.45 is: 11,289.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.77 : 18,609.96 = 8,182.45 : x
  2. Step 2: Convert to fraction form
    13,487.77/18,609.96 = 8,182.45/x
  3. Step 3: Cross multiply
    13,487.77x = 18,609.96 × 8,182.45
  4. Step 4: Simplify right side
    13,487.77x = 152,275,067.20
  5. Step 5: Solve for x
    x = 152,275,067.20/13,487.77
  6. Step 6: Final answer
    x = 11,289.86

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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.