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Finding the Fourth Proportional to 13,403.10, 20,104.65 and 12,834.30

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Solution

The fourth proportional to 13,403.10, 20,104.65 and 12,834.30 is: 19,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.10 : 20,104.65 = 12,834.30 : x
  2. Step 2: Convert to fraction form
    13,403.10/20,104.65 = 12,834.30/x
  3. Step 3: Cross multiply
    13,403.10x = 20,104.65 × 12,834.30
  4. Step 4: Simplify right side
    13,403.10x = 258,029,109.50
  5. Step 5: Solve for x
    x = 258,029,109.50/13,403.10
  6. Step 6: Final answer
    x = 19,251.45

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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.