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Finding the Fourth Proportional to 13,595.33, 18,760.32 and 8,289.09

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Solution

The fourth proportional to 13,595.33, 18,760.32 and 8,289.09 is: 11,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,595.33 : 18,760.32 = 8,289.09 : x
  2. Step 2: Convert to fraction form
    13,595.33/18,760.32 = 8,289.09/x
  3. Step 3: Cross multiply
    13,595.33x = 18,760.32 × 8,289.09
  4. Step 4: Simplify right side
    13,595.33x = 155,505,980.91
  5. Step 5: Solve for x
    x = 155,505,980.91/13,595.33
  6. Step 6: Final answer
    x = 11,438.20

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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.