Home / 12,738.43-17,581.11-7,361.14

Finding the Fourth Proportional to 12,738.43, 17,581.11 and 7,361.14

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Solution

The fourth proportional to 12,738.43, 17,581.11 and 7,361.14 is: 10,159.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.43 : 17,581.11 = 7,361.14 : x
  2. Step 2: Convert to fraction form
    12,738.43/17,581.11 = 7,361.14/x
  3. Step 3: Cross multiply
    12,738.43x = 17,581.11 × 7,361.14
  4. Step 4: Simplify right side
    12,738.43x = 129,417,012.07
  5. Step 5: Solve for x
    x = 129,417,012.07/12,738.43
  6. Step 6: Final answer
    x = 10,159.57

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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.