Home / 21,261.49-31,896.83-6,471.57

Finding the Fourth Proportional to 21,261.49, 31,896.83 and 6,471.57

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Solution

The fourth proportional to 21,261.49, 31,896.83 and 6,471.57 is: 9,708.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.49 : 31,896.83 = 6,471.57 : x
  2. Step 2: Convert to fraction form
    21,261.49/31,896.83 = 6,471.57/x
  3. Step 3: Cross multiply
    21,261.49x = 31,896.83 × 6,471.57
  4. Step 4: Simplify right side
    21,261.49x = 206,422,376.28
  5. Step 5: Solve for x
    x = 206,422,376.28/21,261.49
  6. Step 6: Final answer
    x = 9,708.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.