Home / 13,192.01-18,207.72-12,128.09

Finding the Fourth Proportional to 13,192.01, 18,207.72 and 12,128.09

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Solution

The fourth proportional to 13,192.01, 18,207.72 and 12,128.09 is: 16,739.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,192.01 : 18,207.72 = 12,128.09 : x
  2. Step 2: Convert to fraction form
    13,192.01/18,207.72 = 12,128.09/x
  3. Step 3: Cross multiply
    13,192.01x = 18,207.72 × 12,128.09
  4. Step 4: Simplify right side
    13,192.01x = 220,824,859.26
  5. Step 5: Solve for x
    x = 220,824,859.26/13,192.01
  6. Step 6: Final answer
    x = 16,739.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.