Home / 21,487.26-29,682.87-20,450.46

Finding the Fourth Proportional to 21,487.26, 29,682.87 and 20,450.46

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Solution

The fourth proportional to 21,487.26, 29,682.87 and 20,450.46 is: 28,250.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.26 : 29,682.87 = 20,450.46 : x
  2. Step 2: Convert to fraction form
    21,487.26/29,682.87 = 20,450.46/x
  3. Step 3: Cross multiply
    21,487.26x = 29,682.87 × 20,450.46
  4. Step 4: Simplify right side
    21,487.26x = 607,028,345.62
  5. Step 5: Solve for x
    x = 607,028,345.62/21,487.26
  6. Step 6: Final answer
    x = 28,250.62

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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.