Home / 20,537.28-28,156.50-20,163.60

Finding the Fourth Proportional to 20,537.28, 28,156.50 and 20,163.60

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Solution

The fourth proportional to 20,537.28, 28,156.50 and 20,163.60 is: 27,644.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,537.28 : 28,156.50 = 20,163.60 : x
  2. Step 2: Convert to fraction form
    20,537.28/28,156.50 = 20,163.60/x
  3. Step 3: Cross multiply
    20,537.28x = 28,156.50 × 20,163.60
  4. Step 4: Simplify right side
    20,537.28x = 567,736,403.40
  5. Step 5: Solve for x
    x = 567,736,403.40/20,537.28
  6. Step 6: Final answer
    x = 27,644.19

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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.