Home / 20,611.64-28,467.24-13,885.49

Finding the Fourth Proportional to 20,611.64, 28,467.24 and 13,885.49

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Solution

The fourth proportional to 20,611.64, 28,467.24 and 13,885.49 is: 19,177.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.64 : 28,467.24 = 13,885.49 : x
  2. Step 2: Convert to fraction form
    20,611.64/28,467.24 = 13,885.49/x
  3. Step 3: Cross multiply
    20,611.64x = 28,467.24 × 13,885.49
  4. Step 4: Simplify right side
    20,611.64x = 395,281,576.35
  5. Step 5: Solve for x
    x = 395,281,576.35/20,611.64
  6. Step 6: Final answer
    x = 19,177.59

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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.