Home / 13,406.10-20,109.15-12,837.30

Finding the Fourth Proportional to 13,406.10, 20,109.15 and 12,837.30

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Solution

The fourth proportional to 13,406.10, 20,109.15 and 12,837.30 is: 19,255.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.10 : 20,109.15 = 12,837.30 : x
  2. Step 2: Convert to fraction form
    13,406.10/20,109.15 = 12,837.30/x
  3. Step 3: Cross multiply
    13,406.10x = 20,109.15 × 12,837.30
  4. Step 4: Simplify right side
    13,406.10x = 258,147,191.30
  5. Step 5: Solve for x
    x = 258,147,191.30/13,406.10
  6. Step 6: Final answer
    x = 19,255.95

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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.