Home / 13,416.20-20,124.30-9,960.20

Finding the Fourth Proportional to 13,416.20, 20,124.30 and 9,960.20

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Solution

The fourth proportional to 13,416.20, 20,124.30 and 9,960.20 is: 14,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.20 : 20,124.30 = 9,960.20 : x
  2. Step 2: Convert to fraction form
    13,416.20/20,124.30 = 9,960.20/x
  3. Step 3: Cross multiply
    13,416.20x = 20,124.30 × 9,960.20
  4. Step 4: Simplify right side
    13,416.20x = 200,442,052.86
  5. Step 5: Solve for x
    x = 200,442,052.86/13,416.20
  6. Step 6: Final answer
    x = 14,940.30

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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.