Home / 13,628.60-18,810.78-8,327.88

Finding the Fourth Proportional to 13,628.60, 18,810.78 and 8,327.88

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Solution

The fourth proportional to 13,628.60, 18,810.78 and 8,327.88 is: 11,494.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.60 : 18,810.78 = 8,327.88 : x
  2. Step 2: Convert to fraction form
    13,628.60/18,810.78 = 8,327.88/x
  3. Step 3: Cross multiply
    13,628.60x = 18,810.78 × 8,327.88
  4. Step 4: Simplify right side
    13,628.60x = 156,653,918.55
  5. Step 5: Solve for x
    x = 156,653,918.55/13,628.60
  6. Step 6: Final answer
    x = 11,494.50

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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.