Home / 13,125.28-19,671.30-5,727.76

Finding the Fourth Proportional to 13,125.28, 19,671.30 and 5,727.76

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Solution

The fourth proportional to 13,125.28, 19,671.30 and 5,727.76 is: 8,584.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.28 : 19,671.30 = 5,727.76 : x
  2. Step 2: Convert to fraction form
    13,125.28/19,671.30 = 5,727.76/x
  3. Step 3: Cross multiply
    13,125.28x = 19,671.30 × 5,727.76
  4. Step 4: Simplify right side
    13,125.28x = 112,672,485.29
  5. Step 5: Solve for x
    x = 112,672,485.29/13,125.28
  6. Step 6: Final answer
    x = 8,584.39

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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.