Home / 12,761.45-17,619.39-11,412.87

Finding the Fourth Proportional to 12,761.45, 17,619.39 and 11,412.87

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Solution

The fourth proportional to 12,761.45, 17,619.39 and 11,412.87 is: 15,757.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.45 : 17,619.39 = 11,412.87 : x
  2. Step 2: Convert to fraction form
    12,761.45/17,619.39 = 11,412.87/x
  3. Step 3: Cross multiply
    12,761.45x = 17,619.39 × 11,412.87
  4. Step 4: Simplify right side
    12,761.45x = 201,087,807.55
  5. Step 5: Solve for x
    x = 201,087,807.55/12,761.45
  6. Step 6: Final answer
    x = 15,757.45

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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.