Home / 13,875.75-20,816.72-4,015.78

Finding the Fourth Proportional to 13,875.75, 20,816.72 and 4,015.78

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Solution

The fourth proportional to 13,875.75, 20,816.72 and 4,015.78 is: 6,024.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.75 : 20,816.72 = 4,015.78 : x
  2. Step 2: Convert to fraction form
    13,875.75/20,816.72 = 4,015.78/x
  3. Step 3: Cross multiply
    13,875.75x = 20,816.72 × 4,015.78
  4. Step 4: Simplify right side
    13,875.75x = 83,595,367.84
  5. Step 5: Solve for x
    x = 83,595,367.84/13,875.75
  6. Step 6: Final answer
    x = 6,024.57

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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.