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Finding the Fourth Proportional to 13,390.55, 20,090.01 and 8,059.55

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Solution

The fourth proportional to 13,390.55, 20,090.01 and 8,059.55 is: 12,091.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.55 : 20,090.01 = 8,059.55 : x
  2. Step 2: Convert to fraction form
    13,390.55/20,090.01 = 8,059.55/x
  3. Step 3: Cross multiply
    13,390.55x = 20,090.01 × 8,059.55
  4. Step 4: Simplify right side
    13,390.55x = 161,916,339.65
  5. Step 5: Solve for x
    x = 161,916,339.65/13,390.55
  6. Step 6: Final answer
    x = 12,091.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.