Home / 13,476.20-20,214.30-12,309.80

Finding the Fourth Proportional to 13,476.20, 20,214.30 and 12,309.80

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Solution

The fourth proportional to 13,476.20, 20,214.30 and 12,309.80 is: 18,464.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,476.20 : 20,214.30 = 12,309.80 : x
  2. Step 2: Convert to fraction form
    13,476.20/20,214.30 = 12,309.80/x
  3. Step 3: Cross multiply
    13,476.20x = 20,214.30 × 12,309.80
  4. Step 4: Simplify right side
    13,476.20x = 248,833,990.14
  5. Step 5: Solve for x
    x = 248,833,990.14/13,476.20
  6. Step 6: Final answer
    x = 18,464.70

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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.