Home / 20,507.53-28,295.16-12,546.85

Finding the Fourth Proportional to 20,507.53, 28,295.16 and 12,546.85

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Solution

The fourth proportional to 20,507.53, 28,295.16 and 12,546.85 is: 17,311.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.53 : 28,295.16 = 12,546.85 : x
  2. Step 2: Convert to fraction form
    20,507.53/28,295.16 = 12,546.85/x
  3. Step 3: Cross multiply
    20,507.53x = 28,295.16 × 12,546.85
  4. Step 4: Simplify right side
    20,507.53x = 355,015,128.25
  5. Step 5: Solve for x
    x = 355,015,128.25/20,507.53
  6. Step 6: Final answer
    x = 17,311.45

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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.