Home / 13,410.30-20,115.45-12,200.70

Finding the Fourth Proportional to 13,410.30, 20,115.45 and 12,200.70

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Solution

The fourth proportional to 13,410.30, 20,115.45 and 12,200.70 is: 18,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.30 : 20,115.45 = 12,200.70 : x
  2. Step 2: Convert to fraction form
    13,410.30/20,115.45 = 12,200.70/x
  3. Step 3: Cross multiply
    13,410.30x = 20,115.45 × 12,200.70
  4. Step 4: Simplify right side
    13,410.30x = 245,422,570.82
  5. Step 5: Solve for x
    x = 245,422,570.82/13,410.30
  6. Step 6: Final answer
    x = 18,301.05

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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.