Home / 13,571.28-20,358.36-5,780.88

Finding the Fourth Proportional to 13,571.28, 20,358.36 and 5,780.88

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Solution

The fourth proportional to 13,571.28, 20,358.36 and 5,780.88 is: 8,671.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.28 : 20,358.36 = 5,780.88 : x
  2. Step 2: Convert to fraction form
    13,571.28/20,358.36 = 5,780.88/x
  3. Step 3: Cross multiply
    13,571.28x = 20,358.36 × 5,780.88
  4. Step 4: Simplify right side
    13,571.28x = 117,689,236.16
  5. Step 5: Solve for x
    x = 117,689,236.16/13,571.28
  6. Step 6: Final answer
    x = 8,671.93

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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.