Home / 19,761.28-27,271.44-11,380.48

Finding the Fourth Proportional to 19,761.28, 27,271.44 and 11,380.48

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Solution

The fourth proportional to 19,761.28, 27,271.44 and 11,380.48 is: 15,705.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761.28 : 27,271.44 = 11,380.48 : x
  2. Step 2: Convert to fraction form
    19,761.28/27,271.44 = 11,380.48/x
  3. Step 3: Cross multiply
    19,761.28x = 27,271.44 × 11,380.48
  4. Step 4: Simplify right side
    19,761.28x = 310,362,077.49
  5. Step 5: Solve for x
    x = 310,362,077.49/19,761.28
  6. Step 6: Final answer
    x = 15,705.57

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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.