Home / 21,739.87-29,776.23-20,463.21

Finding the Fourth Proportional to 21,739.87, 29,776.23 and 20,463.21

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Solution

The fourth proportional to 21,739.87, 29,776.23 and 20,463.21 is: 28,027.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,739.87 : 29,776.23 = 20,463.21 : x
  2. Step 2: Convert to fraction form
    21,739.87/29,776.23 = 20,463.21/x
  3. Step 3: Cross multiply
    21,739.87x = 29,776.23 × 20,463.21
  4. Step 4: Simplify right side
    21,739.87x = 609,317,221.31
  5. Step 5: Solve for x
    x = 609,317,221.31/21,739.87
  6. Step 6: Final answer
    x = 28,027.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.