Home / 19,179.90-26,480.43-13,140.36

Finding the Fourth Proportional to 19,179.90, 26,480.43 and 13,140.36

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Solution

The fourth proportional to 19,179.90, 26,480.43 and 13,140.36 is: 18,142.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,179.90 : 26,480.43 = 13,140.36 : x
  2. Step 2: Convert to fraction form
    19,179.90/26,480.43 = 13,140.36/x
  3. Step 3: Cross multiply
    19,179.90x = 26,480.43 × 13,140.36
  4. Step 4: Simplify right side
    19,179.90x = 347,962,383.15
  5. Step 5: Solve for x
    x = 347,962,383.15/19,179.90
  6. Step 6: Final answer
    x = 18,142.03

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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.