Home / 20,484.87-30,687.93-12,564.28

Finding the Fourth Proportional to 20,484.87, 30,687.93 and 12,564.28

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Solution

The fourth proportional to 20,484.87, 30,687.93 and 12,564.28 is: 18,822.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.87 : 30,687.93 = 12,564.28 : x
  2. Step 2: Convert to fraction form
    20,484.87/30,687.93 = 12,564.28/x
  3. Step 3: Cross multiply
    20,484.87x = 30,687.93 × 12,564.28
  4. Step 4: Simplify right side
    20,484.87x = 385,571,745.14
  5. Step 5: Solve for x
    x = 385,571,745.14/20,484.87
  6. Step 6: Final answer
    x = 18,822.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.