Home / 13,720.34-20,580.51-4,955.27

Finding the Fourth Proportional to 13,720.34, 20,580.51 and 4,955.27

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Solution

The fourth proportional to 13,720.34, 20,580.51 and 4,955.27 is: 7,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.34 : 20,580.51 = 4,955.27 : x
  2. Step 2: Convert to fraction form
    13,720.34/20,580.51 = 4,955.27/x
  3. Step 3: Cross multiply
    13,720.34x = 20,580.51 × 4,955.27
  4. Step 4: Simplify right side
    13,720.34x = 101,981,880.89
  5. Step 5: Solve for x
    x = 101,981,880.89/13,720.34
  6. Step 6: Final answer
    x = 7,432.90

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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.