Home / 13,450.64-20,169.81-7,209.59

Finding the Fourth Proportional to 13,450.64, 20,169.81 and 7,209.59

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Solution

The fourth proportional to 13,450.64, 20,169.81 and 7,209.59 is: 10,811.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,450.64 : 20,169.81 = 7,209.59 : x
  2. Step 2: Convert to fraction form
    13,450.64/20,169.81 = 7,209.59/x
  3. Step 3: Cross multiply
    13,450.64x = 20,169.81 × 7,209.59
  4. Step 4: Simplify right side
    13,450.64x = 145,415,959.63
  5. Step 5: Solve for x
    x = 145,415,959.63/13,450.64
  6. Step 6: Final answer
    x = 10,811.09

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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.