Home / 12,761.40-17,619.32-11,412.81

Finding the Fourth Proportional to 12,761.40, 17,619.32 and 11,412.81

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Solution

The fourth proportional to 12,761.40, 17,619.32 and 11,412.81 is: 15,757.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.40 : 17,619.32 = 11,412.81 : x
  2. Step 2: Convert to fraction form
    12,761.40/17,619.32 = 11,412.81/x
  3. Step 3: Cross multiply
    12,761.40x = 17,619.32 × 11,412.81
  4. Step 4: Simplify right side
    12,761.40x = 201,085,951.49
  5. Step 5: Solve for x
    x = 201,085,951.49/12,761.40
  6. Step 6: Final answer
    x = 15,757.36

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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.