Home / 13,671.55-20,509.50-4,789.36

Finding the Fourth Proportional to 13,671.55, 20,509.50 and 4,789.36

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Solution

The fourth proportional to 13,671.55, 20,509.50 and 4,789.36 is: 7,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.55 : 20,509.50 = 4,789.36 : x
  2. Step 2: Convert to fraction form
    13,671.55/20,509.50 = 4,789.36/x
  3. Step 3: Cross multiply
    13,671.55x = 20,509.50 × 4,789.36
  4. Step 4: Simplify right side
    13,671.55x = 98,227,378.92
  5. Step 5: Solve for x
    x = 98,227,378.92/13,671.55
  6. Step 6: Final answer
    x = 7,184.80

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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.