Home / 13,308.39-18,372.33-8,829.90

Finding the Fourth Proportional to 13,308.39, 18,372.33 and 8,829.90

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Solution

The fourth proportional to 13,308.39, 18,372.33 and 8,829.90 is: 12,189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.39 : 18,372.33 = 8,829.90 : x
  2. Step 2: Convert to fraction form
    13,308.39/18,372.33 = 8,829.90/x
  3. Step 3: Cross multiply
    13,308.39x = 18,372.33 × 8,829.90
  4. Step 4: Simplify right side
    13,308.39x = 162,225,836.67
  5. Step 5: Solve for x
    x = 162,225,836.67/13,308.39
  6. Step 6: Final answer
    x = 12,189.74

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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.