Home / 13,026.80-17,975.40-7,361.20

Finding the Fourth Proportional to 13,026.80, 17,975.40 and 7,361.20

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Solution

The fourth proportional to 13,026.80, 17,975.40 and 7,361.20 is: 10,157.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,026.80 : 17,975.40 = 7,361.20 : x
  2. Step 2: Convert to fraction form
    13,026.80/17,975.40 = 7,361.20/x
  3. Step 3: Cross multiply
    13,026.80x = 17,975.40 × 7,361.20
  4. Step 4: Simplify right side
    13,026.80x = 132,320,514.48
  5. Step 5: Solve for x
    x = 132,320,514.48/13,026.80
  6. Step 6: Final answer
    x = 10,157.56

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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.