Home / 21,071.26-29,211.47-19,947.66

Finding the Fourth Proportional to 21,071.26, 29,211.47 and 19,947.66

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Solution

The fourth proportional to 21,071.26, 29,211.47 and 19,947.66 is: 27,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.26 : 29,211.47 = 19,947.66 : x
  2. Step 2: Convert to fraction form
    21,071.26/29,211.47 = 19,947.66/x
  3. Step 3: Cross multiply
    21,071.26x = 29,211.47 × 19,947.66
  4. Step 4: Simplify right side
    21,071.26x = 582,700,471.66
  5. Step 5: Solve for x
    x = 582,700,471.66/21,071.26
  6. Step 6: Final answer
    x = 27,653.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.