Home / 21,056.24-29,183.18-20,662.64

Finding the Fourth Proportional to 21,056.24, 29,183.18 and 20,662.64

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Solution

The fourth proportional to 21,056.24, 29,183.18 and 20,662.64 is: 28,637.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.24 : 29,183.18 = 20,662.64 : x
  2. Step 2: Convert to fraction form
    21,056.24/29,183.18 = 20,662.64/x
  3. Step 3: Cross multiply
    21,056.24x = 29,183.18 × 20,662.64
  4. Step 4: Simplify right side
    21,056.24x = 603,001,542.40
  5. Step 5: Solve for x
    x = 603,001,542.40/21,056.24
  6. Step 6: Final answer
    x = 28,637.66

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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.