Home / 13,915.64-20,873.82-3,528.20

Finding the Fourth Proportional to 13,915.64, 20,873.82 and 3,528.20

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Solution

The fourth proportional to 13,915.64, 20,873.82 and 3,528.20 is: 5,292.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.64 : 20,873.82 = 3,528.20 : x
  2. Step 2: Convert to fraction form
    13,915.64/20,873.82 = 3,528.20/x
  3. Step 3: Cross multiply
    13,915.64x = 20,873.82 × 3,528.20
  4. Step 4: Simplify right side
    13,915.64x = 73,647,011.72
  5. Step 5: Solve for x
    x = 73,647,011.72/13,915.64
  6. Step 6: Final answer
    x = 5,292.39

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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.