Home / 13,406.50-20,110.83-4,172.50

Finding the Fourth Proportional to 13,406.50, 20,110.83 and 4,172.50

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Solution

The fourth proportional to 13,406.50, 20,110.83 and 4,172.50 is: 6,259.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.50 : 20,110.83 = 4,172.50 : x
  2. Step 2: Convert to fraction form
    13,406.50/20,110.83 = 4,172.50/x
  3. Step 3: Cross multiply
    13,406.50x = 20,110.83 × 4,172.50
  4. Step 4: Simplify right side
    13,406.50x = 83,912,438.18
  5. Step 5: Solve for x
    x = 83,912,438.18/13,406.50
  6. Step 6: Final answer
    x = 6,259.09

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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.