Home / 13,772.94-20,660.70-4,887.41

Finding the Fourth Proportional to 13,772.94, 20,660.70 and 4,887.41

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Solution

The fourth proportional to 13,772.94, 20,660.70 and 4,887.41 is: 7,331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.94 : 20,660.70 = 4,887.41 : x
  2. Step 2: Convert to fraction form
    13,772.94/20,660.70 = 4,887.41/x
  3. Step 3: Cross multiply
    13,772.94x = 20,660.70 × 4,887.41
  4. Step 4: Simplify right side
    13,772.94x = 100,977,359.90
  5. Step 5: Solve for x
    x = 100,977,359.90/13,772.94
  6. Step 6: Final answer
    x = 7,331.58

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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.