Home / 13,783.60-20,675.28-3,921.58

Finding the Fourth Proportional to 13,783.60, 20,675.28 and 3,921.58

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Solution

The fourth proportional to 13,783.60, 20,675.28 and 3,921.58 is: 5,882.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.60 : 20,675.28 = 3,921.58 : x
  2. Step 2: Convert to fraction form
    13,783.60/20,675.28 = 3,921.58/x
  3. Step 3: Cross multiply
    13,783.60x = 20,675.28 × 3,921.58
  4. Step 4: Simplify right side
    13,783.60x = 81,079,764.54
  5. Step 5: Solve for x
    x = 81,079,764.54/13,783.60
  6. Step 6: Final answer
    x = 5,882.34

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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.