Home / 21,056.76-29,096.82-20,031.71

Finding the Fourth Proportional to 21,056.76, 29,096.82 and 20,031.71

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Solution

The fourth proportional to 21,056.76, 29,096.82 and 20,031.71 is: 27,680.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.76 : 29,096.82 = 20,031.71 : x
  2. Step 2: Convert to fraction form
    21,056.76/29,096.82 = 20,031.71/x
  3. Step 3: Cross multiply
    21,056.76x = 29,096.82 × 20,031.71
  4. Step 4: Simplify right side
    21,056.76x = 582,858,914.68
  5. Step 5: Solve for x
    x = 582,858,914.68/21,056.76
  6. Step 6: Final answer
    x = 27,680.37

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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.