Home / 11,127.80-15,361.38-7,100.06

Finding the Fourth Proportional to 11,127.80, 15,361.38 and 7,100.06

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Solution

The fourth proportional to 11,127.80, 15,361.38 and 7,100.06 is: 9,801.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,127.80 : 15,361.38 = 7,100.06 : x
  2. Step 2: Convert to fraction form
    11,127.80/15,361.38 = 7,100.06/x
  3. Step 3: Cross multiply
    11,127.80x = 15,361.38 × 7,100.06
  4. Step 4: Simplify right side
    11,127.80x = 109,066,642.88
  5. Step 5: Solve for x
    x = 109,066,642.88/11,127.80
  6. Step 6: Final answer
    x = 9,801.27

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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.