Home / 13,812.85-20,722.28-5,047.75

Finding the Fourth Proportional to 13,812.85, 20,722.28 and 5,047.75

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Solution

The fourth proportional to 13,812.85, 20,722.28 and 5,047.75 is: 7,572.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.85 : 20,722.28 = 5,047.75 : x
  2. Step 2: Convert to fraction form
    13,812.85/20,722.28 = 5,047.75/x
  3. Step 3: Cross multiply
    13,812.85x = 20,722.28 × 5,047.75
  4. Step 4: Simplify right side
    13,812.85x = 104,600,888.87
  5. Step 5: Solve for x
    x = 104,600,888.87/13,812.85
  6. Step 6: Final answer
    x = 7,572.72

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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.